# Category: Class 11th Maths NCERT Notes

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### Probability Class 11 Notes Maths Chapter 16

Probability Class 11 Notes Maths Chapter 16 Coin, Die and Playing cards (i) Coin : It has two sides, viz. head and tail. If we have more than one coin, coins are regarded as distinct, if not otherwise stated. (ii) Die : A die has six faces marked 1, 2, 3, 4, 5 and 6.…

### Statistics Class 11 Notes Maths Chapter 15

Statistics Class 11 Notes Maths Chapter 15 Before we discuss about the measure of deviations, we are expected to know how to calculate arithmetic mean $$\bar{x}$$ and median. To find mean of a distribution, we proceeded as : For ungrouped data : x1, x1 …….. xn. $$\bar{x}=\frac{x_{1}+x_{2}+\ldots+x_{n}}{n}=\frac{\Sigma x_{i}}{n}$$ For discrete frequency distribution For Continuous Frequency…

### Mathematical Reasoning Class 11 Notes Maths Chapter 14

Mathematical Reasoning Class 11 Notes Maths Chapter 14 Statement : A sentence is called mathematically acceptable statement, if it is either true of false but not both. Negation of a Statement: The denial of a statement is called negation of the statement e.g. If p : Diagonals of a rectangle are equal. So, ~ p…

### Limits and Derivatives Class 11 Notes Maths Chapter 13

Limits and Derivatives Class 11 Notes Maths Chapter 13 Left Hand Limit: The $$\lim _{x \rightarrow a^{-}}$$f(x) is the expected value f(x) at x = a, given the values of fix) near x to the left of a. This value is called the left hand limit of f(x) at a. Right Hand Limit : The…

### Introduction to three Dimensional Geometry Class 11 Notes Maths Chapter 12

Introduction to three Dimensional Geometry Class 11 Notes Maths Chapter 12 Co-ordinates of a Point: The co-ordinates of a point are the distances from the origin of the feet of the perpendiculars from the point on the respective co-ordinate axes. Distance Formula : The distance between the points (x1 y1, z1) and (x2, y2, z2)…

### Conic Sections Class 11 Notes Maths Chapter 11

Conic Sections Class 11 Notes Maths Chapter 11 Conic : Let T be a fixed line and F be a fixed point (not on line T). Let P be any point in the plane of the line T and the point F. Then, the set of all points P, such that | FP | =…

### Straight lines Class 11 Notes Maths Chapter 10

Straight lines Class 11 Notes Maths Chapter 10 Co-ordinate Geometry: The branch of Mathematics in which geometrical problem are solved through algebra by using the co-ordinate system, is known as co-ordinate geometry or analytical geometry. Algebrical Representation of a Point: It is done by means of two numbers defined in a particular way called co-ordinates…

### Sequences and Series Class 11 Notes Maths Chapter 9

Sequences and Series Class 11 Notes Maths Chapter 9 Sequence : A set of numbers arranged according to some definite rule is called a sequence. The different numbers which form the sequence are called the terms of the sequence. Terms are denoted by the symbols T1 T2, T3, … etc. the subscript denotes the position…
Binomial Theorem Notes Class 11 Maths Chapter 8 Binomial theorem for any positive integer 1. (a + b)n = nC0an + nC1an-1 + nC2an-2 + ………………..nCran-rbr + ………..+ nCnbn 2. Tr+1 = general term = nCran-rbr … (1) (a + b)n = $$\sum_{r=0}^{n}$$nCran-rbr 3. Some observations : (i) Number of terms in binomial expansion =…