Question

Differenciare the following with resPect to x , and find the value when x = 9 .. (1) sin 5x

Answer 1

Answer:

Hello mate,

d (sin5x)/dx = 5. cos5x .... (i)

now , put x=9 in (i)

5 cos45= 5×1/root (2)= 5/root (2)