Question

f(x)=x/x+3

find the equation of the tangent of this function when x = -5


I got 3x+4y+5=0

Somehow, it is wrong :/

Answer 1

quotient rule
numerator = u
denominator = v
(u'v - uv')/v^2

Answer 2

What? Here is what I did:

I found the derivative of when x=-5 and plug it into the formula y=mx+b with (x,y) = (-5, 2.5)

Answer 3

actually, nvm. I made a mistake :)