1. dy/dx=4x+1/x dy2/d2x=4-1/x^2 2.dy/dx=2e^(2x-1) dy2/d2x=4e^(2x-1) 3.dy/dx=x*-sinx+cosx=-xsinx+cosx dy2/d2=-1*sinx+(-x)*cosx-sinx=-2sinx-xcosx
