Find the equation of the tangent line to the following curve at the given point P. Illustrate by graphing the curve and the tangent line on the same screen.
1
what did I do wrong? please help!
Here are the steps:
I did it according to this Find the equation of the tangent line to the following curve at the given point P. ? - Yahoo! Answers
y`=6-2x^(1/2)
6-2(1)^(1/2)
y`=4
y-4=4(x-1)
y-4=4x-4
y`=4x (and it's WRONG T_T)
please help me thanks you!!!