I'm having trouble finding the answer to this problem. : Find the derivative of the function 1/((the square root of(x)) and the equation of the line that is tangent to the graph of f and parallel to the given line 3x-y+1. I also found the answer to this one but it was kind of guess and check. : find the equations of two tangent lines to the graph of f that pass through the indicated point where f(x)=x^2 and the indicated point is (1, -3). The last question i have is how you guys put square roots and other symbols in. Can't seem to find them. Thanks a lot.