Question 1046506: Let f(x) = x^2 - 7x
What is the equation of the tangent line at P(5,f(5)).
The slope of the tangent line is 3. Found 2 solutions by Alan3354, MathLover1:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Let f(x) = x^2 - 7x
What is the equation of the tangent line at P(5,f(5)).
The slope of the tangent line is 3.
=================
Let f(x) = x^2 - 7x
f'(x) = 2x - 7
f'(5) = 3
=============
f(3) = 9 - 21 = -12 --> the point (5,-12)
---
y + 12 = 3*(x - 5)
You can put this solution on YOUR website!
if , to find P(,), first find
so, the point is P(,),
if he slope of the tangent line is , equation of a line will be
...substitute ,, and
