If y = cos(x2 + 1), then dy/dx is equal to

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## If is a GM (geometric mean) of a and b, then the value of n is….

EduGorilla, , 0

If is a GM (geometric mean) of a and b, then the value of n is

## An AP, a GP and an HP have the same first and last terms and the same odd number of terms. The middl….

EduGorilla, , 0

An AP, a GP and an HP have the same first and last terms and the same odd number of terms. The middle terms of the three series are in

## If a, b, c are in AP, then 3a, 3b, 3c are in….

EduGorilla, , 0

If a, b, c are in AP, then 3a, 3b, 3c are in

## The value of 91/3. 91/9. 91/27 … up to is….

EduGorilla, , 0

The value of 91/3. 91/9. 91/27 … up to is

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## =….

EduGorilla, , 0

## The sum of 12C1. + 12C2 + 12C3 + ……………. upto 12 terms is ….

EduGorilla, , 0

The sum of 12C1. + 12C2 + 12C3 + ……………. upto 12 terms is

## The term containing x3 in the expansion of (x−2y)7 is….

EduGorilla, , 0

The term containing x3 in the expansion of (x−2y)7 is

## If n is a +ve integer, then the binomial coefficients equidistant from the beginning and the end in ….

EduGorilla, , 0

If n is a +ve integer, then the binomial coefficients equidistant from the beginning and the end in the expansion of (x+a)n are

## In the expansion of (1 + x)2n + 1, let the coefficients of xr and xr + 1 be equal. Then, the value o….

EduGorilla, , 0

In the expansion of (1 + x)2n + 1, let the coefficients of xr and xr + 1 be equal. Then, the value of r is

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