Hi

In both cases, your expected to use the definition of the derivative : . The first derivative should be quite easy to find and for the second one you'll need and

What's the problem with these ones ?Obtain the derivatives below using rules of differentiation

1.55x^15-11e^x2+8lnx^4+8x^-15-3/4x^5/7

2.y=(2x^3-4x^2)ln(x^4-7x^2)

3.y=(6.8ex^3+4x^2)/(9ln(x^2-7x))

4.y=(3e^(4x-10)4(lnx^3-2x)^7