1) y'=(sin2x-cos3x)'=cos2x*2+sin3x*3=2cos2x+3sin3x;
2) y'=(2x³+3sin²5x)=6x²+3*2sin5x*cos5x*5=6x²+30sin5xcos5x;
3) y'=(sin(2x²-x)'=cos(2x²-x)*(4x-1);
4) y'=(x²*cos(x-1))'=2x*cos(x-1)-x²*sin(x-1)*1=2xcos(x-1)-x²sin(x-1);
5) y'=(2tg³4x)'=2*3*tg²4x*1/cos4x*4=24tg²4x/cos4x.