Помогите. Любые 5 заданий!!! Производные!!

1.2 f`(x)=(2+2x²-4x²)/(1+x²)²=(2-2x²)/(1+x²)² f`(-3)=(2-18)/(1+9)²=-16/100=-0,16 1.3 f`(x)=(x-1)`*√(x²+1)+(x-1)*(√(x²+1))`=1*√(x²+1)+(x-1)*2x/(2√(x²+1))= =√(x²+1)+x(x-1)/√(x²+1)=(x²+1+x²-x)/√(x²+1)=(2x²-x+1)/√(x²+1) f`(0)=(0-0+1)/√(0+1)=1/1=1 1.4 y`=1/3*3cos²x*(-sinx)+sinx=sinx*(-cos²x+1) y`(π/6)=sinπ/6*(-cos²π/6+1)=1/2*(-3/4+1)=1/2*1/4=1/8 1.5 f`(x)=4(x+1)/(x-1)*(x+1-x+1)/(x+1)²=4(x+1)/(x-1)*2/(x+1)²=8/[(x-1)(x+1)]=8/(x²-1) f`(-3)=8/(9-1)=8/8=1 1.6 f`(x)=5/(2√e^5x) f`(0)=5/(2√e)