Hello Please help teach and solve these problems Thank you:)

1. Write an expression for the slope of the tangent line to the curve y = f(x) at the point a, over [a,x] Let h = x-a 2. Find the limit of: lim ex-x2 x -+ 003. Find f (x x2-x +2 y = Vx4. Find f'(x) y = x sin( nx ) 5. Find f'( x) implicitly or explicitly as is appropriate/ possible x ey = y sin x