Question

Differentiate using power rule.

Answer 1

The slope of the tangent line to the curve y=x^2 +4x +7 at x=1 is

Answer 2

I started it and got \[\frac{ d }{ dx }(x^2+4x+7)\]

Answer 3

and then i got 2x+4 as the answer, but the book says its wrong, what did i do wrong

Answer 4

2x+4 is the general slope equation (aka the derivative). To find the value at x=1. you simply need to plug 1 into 2x+4

Answer 5

Oh, i see now, thanks very much.