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(i)If y = x^(3) + x^(2) + x +1 then dy/d...

(i)If `y = x^(3) + x^(2) + x +1 then dy/dx` at x = 1 is 0
(ii)If `y=sin^(-1)((2x)/(1+x^(2))) then dy/dx = tanx`
(iii)`y = x^(x) dy/dx = x^(x)[1+logx]`
(iv)`y = tan^(-1)x, dy/dx = 1/(1 + x^(2)`
state which pair of the statement given above are true.

A

(i) and (ii) are true

B

(ii) and (iv) are true

C

(iii) and (iv) are true

D

(i) and (iv) are true

Text Solution

Verified by Experts

The correct Answer is:
C
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