I reduced it to:
But I don't know what to do after that.
2. Find equations of all tangent lines to the graph of
I took the derivative of the equation, which was:
I then thought I might need to make the derivative equal to the original equation, so:
But I don't really know...
3. Determine values of constant real numbers a, b so that the function:
if x is greater than -1
is differentiable at x=-1.
No idea how to do this one.