How do you differentiate t(x)= 3^(7x-3)?

1 Answer
Nov 20, 2016

Take the natural logarithm of each side.

y = 3^(7x - 3)

lny = ln(3^(7x- 3))

lny = (7x - 3)ln3

Differentiate using the product rule and the rule that (lnx)' = 1/x.

1/y(dy/dx) = 7ln3 + (7x - 3)0

1/y(dy/dx) = 7ln3

dy/dx = 7ln3/(1/y)

dy/dx= yln3^7

dy/dx= 3^(7x- 3)ln2187

Hopefully this helps!