Question

Find the equation of the tangent line at (3,-4)

x^2 + 2x + 1

Answer 1

Take the derivative, plug in values to find the slope and leave it in y=mx+b form.

Answer 2

btw I don't need the answer, I need to know how to do it

Answer 3

the derivative is the (f(x+h)-f(x))/h right?

Answer 4

the limit yeah as h approaches zero

Answer 5

or you can use the power rule

Answer 6

I'd use power rule.

Answer 7

yes much easier

Answer 8

am I supposed to plug in 4 for H? what's power rule?

Answer 9

If you dont know what the power rule is then use the limit approach

Answer 10

and no, do not type in any value for H, until your equation is totally simplified and then make H=0

Answer 11

I did and simplified it to (h^2 +xh + 2h) /h

Answer 12

Ill draw it out for you :)

Answer 13

then thats h + x + 2

Answer 14

kk

Answer 15

I forgot to draw the lim as h->0 after each equals sign lol.