If fx 1x2 find f4Solutiongiven fx1x2 fxx2 differentiate wit

Solution

given f(x)=1/x²

f(x)=x^-2

differentiate with respect to x , d/dx xⁿ =nx^n-1

f \'(x)=-2x^-2-1

f \'(x)=-2x^-3

f \'(x)=-2/x³

at x =4

f \'(4)=-2/4³

f \'(4)=-2/64

f \'(4)=-1/32