I am having trouble with this problem :
Find k such that the line is tangent to the graph of the function.
Function : f(x)=k√x
Line : y = 4x + 4
From our line, we know the slope is 4! What can we do with this information, well we now have
This is one condition, but we also have the condition that the line must intersect our function! So we have,
Well, now we have 2 equations with 2 unknowns! Solve for K and you have your answer.