Найти производные функций: 1) S= t^2/2-t 2) f(x)= - 1/x^2 3) z= 12sinx
1)S= t^2/2-t S ' = ((t^2)'(2-t)-(2-t)'(t^2))/(2-t)^2 S ' =(2t(2-t)+t^2)/(2-t)^2 S ' =(4t-t^2)/(2-t)^2 S ' =(4t-t^2)/(2-t)^2 2)f(x)= - 1/x^2 f ' (x)=((-1)'(x^2)-(x^2)'(-1))/(x^2)^2 f ' (x)=2x/x^4 f ' (x)=2/x^3 3)z= 12sinx z ' =12cosx ^^