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Question -

Differentiate the following from first principles:
(i) sin √2x
(ii) cos √x



Answer -

(i) sin √2x
Given:
f (x) = sin √2x
f (x + h) = sin √2(x+h)
By using the formula,

(ii) cos √x

Given:

f (x) = cos √x

f (x + h) = cos √(x+h)

By using the formula,

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