Chapter-Wise Solutions€¦ · Sections of a cone: circles, ellipse, parabola, hyperbola; a point,...
Transcript of Chapter-Wise Solutions€¦ · Sections of a cone: circles, ellipse, parabola, hyperbola; a point,...
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CONTENTS
• Syllabus v - viii
• Examination Paper (KVS), 2014 1 - 4
1. Sets 1 - 15
2. Relations and Functions 16 - 27
3. Trigonometric Functions 28 - 50
4. Principle of Mathematical Induction 51 - 65
5. Complex Number and Quadratic Equations 66 - 81
6. Linear Inequalities 82 - 98
7. Permutations and Combinations 99 - 112
8. Binomial Theorem 113 - 127
9. Sequences and Series 128 - 160
10. Straight Lines 161 - 193
11. Conic Sections 194 - 218
12. Introduction to Three Dimensional Geometry 219 - 225
13. Limits and Derivatives 226 - 241
14. Mathematical Reasoning 242 - 249
15. Statistics 250 - 264
16. Probability 265 - 284
( iii )
Note : BSM - Board Supplementary Material, NCT - National Capital Territory, KVS - Kendriya VidyalayaSangathan
Syllabus
MathematicsCourse Structure
Class XI (2014-15)
One Paper Total Hours—Periods of 35 Minutes each
Three Hours Max. Marks. 100
Units No. of Periods Marks
I. Sets and Functions 60 29
II. Algebra 70 37
III. Coordinate Geometry 4019
IV. Calculus 30
V. Mathematical Reasoning 1015
VI. Statistics and Probability 30
Total 240 100
*No chapter/unitwise weightage. Care to be taken to cover all the chapters.
Unit-I : Sets and Functions
1. Sets : 20 Periods
Sets and their representations. Empty set. Finite and Infinite sets. Equal sets. Subsets. Subsets of a
set of real numbers especially intervals (with notations). Power set. Universal set. Venn diagrams.
Union and Intersection of sets. Difference of sets. Complement of a set. Properties of Complement Sets.
Practical Problems based on sets.
2. Relations & Functions : 20 Periods
Ordered pairs, Cartesian product of sets. Number of elements in the cartesian product of two finite
sets. Cartesian product of the sets of real (upto R x R). Definition of relation, pictorial diagrams,
domain, co-domain and range of a relation. Function as a special kind of relation from one set to
another. Pictorial representation of a function, domain, co-domain and range of a function. Real
valued functions, domain and range of these functions; constant, identity, polynomial, rational,
modulus, signum and greatest integer functions, with their graphs. Sum, difference, product and
quotients of functions.
3. Trigonometric Functions : 20 Periods
Positive and negative angles. Measuring angles in radians and in degrees and conversion of one into
other. Definition of trigonometric functions with the help of unit circle. Truth of the sin2 x + cos2 x=1,
for all x. Signs of trigonometric functions. Domain and range of trignometric functions and their
graphs. Expressing sin (x ± y) and cos (x ± y) in terms of sinx, siny, cosx & cosy and their simple
application. Deducing identities like the following :
[ vi ]
tan (x ± y) =
tan tan
1 tan tan
x y
x y , cot (x ± y) =
cot cot 1
cot cot
x y
y x
sin x + sin y = 2sin
2
x ycos
2
x y, cos x + cos y = 2cos
2
x ycos
2
x y,
sin x – sin y = 2cos
2
x ysin
2
x y, cos x – cos y = – 2sin
2
x ysin
2
x y,
Identities related to sin 2x, cos 2x, tan 2x, sin 3x, cos 3x and tan 3x. General solution of trigonometric
equations of the type siny = sin a, cos y = cos a and tan y = tan a.
Unit-II : Algebra
1. Principle of Mathematical Induction : 10 Periods
Process of the proof by induction, motivating the application of the method by looking at natural
numbers as the least inductive subset of real numbers. The principle of mathematical induction and
simple applications.
2. Complex Numbers and Quadratic Equations : 15 Periods
Need for complex numbers, especially 1 , to be motivated by inability to solve some of the quardratic
equations. Algebraic properties of complex numbers. Argand plane and polar representation of complex
numbers. Statement of Fundamental Theorem of Algebra, solution of quadratic equations in the complex
number system. Square root of a complex number.
3. Linear Inequalities : 15 Periods
Linear inequalities. Algebraic solutions of linear inequalities in one variable and their representation
on the number line. Graphical solution of linear inequalities in two variables. Graphical solution of
system of linear inequalities in two variables.
4. Permutations and Combinations : 10 Periods
Fundamental principle of counting. Factorial n. (n!)Permutations and combinations, derivation of
formulae and their connections, simple applications.
5. Binomial Theorem : 10 Periods
History, statement and proof of the binomial theorem for positive integral indices. Pascal’s triangle,
General and middle term in binomial expansion, simple applications.
6. Sequence and Series : 10 Periods
Sequence and Series. Arithmetic Progression (A.P.). Arithmetic Mean (A.M.) Geometric Progression
(G.P.), general term of a G.P., sum of n terms of a G.P., Arithmetic and Geometric series infinite G.P.
and its sum, geometric mean (G.M.), relation between A.M. and G.M. Formula for the following
special sum :
2 3
1 1 1
, andn n n
k k k
k k k
Unit-III : Coordinate Geometry
1. Straight Lines : 10 Periods
Brief recall of two dimensional geometry from earlier classes. Shifting of origin. Slope of a line and
angle between two lines. Various forms of equations of a line: parallel to axis, point-slope form, slope-
[ vii ]
intercept form, two-point form, intercept form and normal form. General equation of a line. Equation
of family of lines passing through the point of intersection of two lines. Distance of a point from a
line.
2. Conic Sections : 20 Periods
Sections of a cone: circles, ellipse, parabola, hyperbola; a point, a straight line and a pair of inter-
secting lines as a degenerated case of a conic section. Standard equations and simple properties of
parabola, ellipse and hyperbola. Standard equation of a circle.
3. Introduction to Three–dimensional Geometry : 10 Periods
Coordinate axes and coordinate planes in three dimensions. Coordinates of a point. Distance between
two points and section formula.
Unit-IV : Calculus
1. Limits and Derivatives : 30 Periods
Derivative introduced as rate of change both as that of distance function and geometrically.
Intutive idea of limit. Limits of polynomials and rational functions, trignometric, exponential and
logarithmic functions. Definition of derivative, relate it to slope of tangent of a curve, derivative of
sum, difference, product and quotient of functions. The derivative of polynomial and trignometric
functions.
Unit-V : Mathematical Reasoning
1. Mathematical Reasoning : 10 Periods
Mathematically acceptable statements. Connecting words/ phrases - consolidating the understand-
ing of “if and only if (necessary and sufficient) condition”, “implies”, “and/or”, “implied by”, “and”,
“or”, “there exists” and their use through variety of examples related to real life and Mathematics.
Validating the statements involving the connecting words difference between contradiction, converse
and contrapositive.
Unit-VI : Statistics and Probability
1. Statistics : 15 Periods
Measures of dispersion; mean deviation, variance and standard deviation of ungrouped/grouped
data. Analysis of frequency distributions with equal means but different variances.
2. Probability : 15 Periods
Random experiments; outcomes, sample spaces (set representation). Events; occurrence of events,
‘not’, ‘and’ and ‘or’ events, exhaustive events, mutually exclusive events, Axiomatic (set theoretic)
probability, connections with the theories of earlier classes. Probability of an event, probability of
‘not’, ‘and’ and ‘or’ events.
[ viii ]
Mathematics (Code No. 041)
Question Paper Design
Class XI (2014-15)
Time : 3 Hours Max. Marks. 100
S. Typology of Questions Learning Very Long Long Marks %
No. Outcomes and Short Answer 1 Answer Weightage
Testing Answer (4 marks) II
Competencies (1 marks) (6 marks)
1. Remembering-(Knowledge based Simple Reasoning 2 3 1 20 20%
recall questions, to know specific facts, Analytical
terms, concepts, principles, or theories, Skills
Identify, define, or recite, information) Critcal
thinking
Derivative
2. Understanding-(Comprehension to be 2 2 1 16 16%
familiar with meaning and to understand
conceptually, interpret, compare, contrast,
explain, paraphrase information)
3. Application (Use abstract information in 1 3 2 25 25%
concrete situation, to apply knowledge to
new situations, Use given content to
interpret a situation, provide an example,
or solve a problem)
4. High Order Thinking Skills (Analysis 1 2 2 21 21%
& Synthesis- Classify, compare, contrast,
or differentiate between different pieces of
information, Organize and/or integrate
unique pieces of information from a variety
of sources)
5. Evaluation and Multi-Disciplinary – 2+1 1 18 18%
(Appraise, judge, and/or justify the value (Value
or worth of a decision or outcome, or to based)
predict outcomes based on values)
TOTAL 6x1=6 13x4=52 7x6=42 100 100%
QUESTION WISE BREAK UP
Type of Question Mark per Question Total No. of Questions Total Marks
VSA 1 6 06
LA-I 4 13 52
LA-II 6 7 42
Total 26 100
1. No chapter wise weightage. Care to be taken to cover all the chapters.
2. The above template is only a sample. Suitable internal variations may be made for generating similar templates
keeping the overall weightage to different form of questions and typology of questions same.
KENDRIYA VIDYALAYA SANGATHAN
COMMON SESSION ENDING EXAMINATION 2013-14
SUBJECT : MATHEMATICS
CLASS-XI
(EXAMINATION PAPER)Time Allowed : 3.00 Hours Maximum Marks : 100
General Instruction :1. All the questions are compulsory.2. The question paper consists of 26 questions divided into 3 sections A, B and C. Section A consists of
6 questions of 1 mark each. Section B consists of 13 questions of 4 marks each. Section C consistsof 7 questions of 6 marks each.
3. All the questions in section A are to be answered in one word, one sentence or as per the exactrequirement of the question.
4. There is no overall choice. However internal choice has been provided in 4 questions of 4 markseach and 2 questions of 6 marks each. You have to attempt only one of the alternative in all suchquestions.
5. Use of calculators in not permitted.
SECTION – A (1 × 6 = 6)
1. Write all the subsets of the set A = {a, b, c}.
2. Find the slope of the line 6x + 3y – 5 = 0.
3. Write the contra positive of the statement : "If x is a prime number, then x is odd."
4. Write the converse of the statement : "x is an even number implies that x is divisible by 4".
5. If C (n, 8) = C (n, 6), find C (n, 2).
6. Write the negation of the statement p : x2 > x, for every real number x.
SECTION – B (4 × 13 = 52)
7. Fine the general solution of the following equation : 2 cos2 x + 3 sin x = 0
8. Prove thatsin5 – 2sin3 sin
cos5 – cos
x x x
x x
= tan x
OR
In any triangle ABC, prove thata b
c
=
cos( – ) / 2
sin / 2
B C
C
9. Using the principle of mathematical induction, prove that for every positive integer n, 7n – 3n isdivisible by 4.
10. Find the square root of (–7 – 24i).OR
If (x + iy)3 = u + iv, then show thatu
x+
v
y= 4 (x2 – y2)
11. Let A = {9, 10, 11, 12, 13} and f : A N be defined by f (n) = the highest prime factor of n. Listthe elements of f and find the range of f.
cont inue
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #
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