Thread: Equation of a tangent line

Find equation of tangent line to y=sqrt(x^2+15) at x=1

Originally Posted by bobby77

Find equation of tangent line to y=sqrt(x^2+15) at x=1

Ok. So to make a tangent line, you are first going to need the general derivative and a point to put everything into point slope form. You have your function. Now differentiate and plug in x=1 into the original equation to find your y value. You then have everything you need.