Hey everyone, Ok I have this one question where I can not find the slope of the tangent using limits.

This is the function:

1 / root(x)

the point is:

( 4, 1/2)

I need to find the slope of the tangent using that and then find the equation which I can do if I had the slope! I have tried for couple of hours right now and no luck anyone can help! I seem to be either stuck somehwere or did something wrong!

Thanks again for your help!