Question

Linear Approximation x^4+3x^2 when a=-1

Answer 1

PLEASE HELP

Answer 2

where is a'

Answer 3

THE FORMULA IS F(a)+f'(a)(x-a)

Answer 4

The answer is -10x-6 but I don tknow how

Answer 5

Ok so we have \[f(x)=x^4+3x^2\]
To find the equation of the tangent line, y=mx+b, we need the slope at x=a
and we also need to know where the x=a is, (a,f(a)).
So if we know a point and we know the slope we are good to go! :)
To find slope do f'(x=a=-1)

Answer 6

What is f'(x)?