Question

solve this derivative: x-7x^3 ; a=1

Use only this form f(a+h)-f(a) / h

Answer 1

plug it in ....

Answer 2

yeah but I don't understand how the formula works that's the issue

Answer 3

the formula is just the slope between 2 points

Answer 4

given the points: (a,f(a)) and (a+h,f(a+h))

we can find the slope between them as:\[\frac{f(a+h)-f(a)}{a+h-a}\]

Answer 5

great, thank you