Все кроме е,ж ПОМОГИТЕ СРОЧНООООООО

а) [latex]f'(x)=12x^3-12x[/latex] б) [latex]f'(x)=- \frac{4}{x^2} + \frac{2}{ \sqrt{x} } [/latex] в) [latex]f'(x)= \frac{x(3x^2-18x)-(x^3-9x^2+5)}{x^2} = \frac{(3x^3-18x^2)-(x^3-9x^2+5)}{x^2} =[/latex] [latex]\frac{2x^3-9x^2-5}{x^2} [/latex] г) [latex]f'(x)= \frac{12x-7}{3} [/latex] д) [latex] f'(x)=\frac{5(3-2x)+2(5x+1)}{(3-2x)^2} =\frac{12-10x+10x+2}{(3-2x^2}=\frac{14}{(3-2x)^2}[/latex] 2) [latex]f'(x)=3x^2-27[/latex] [latex]3x^2-27=0[/latex] [latex]3(x^2-9)=0[/latex] [latex]3(x-3)(x+3)=0[/latex] [latex]x_1=3;x_2=-3[/latex] 3) [latex]f'(x)=3-12x[/latex] [latex]3-12x\ \textgreater \ 0[/latex] [latex]12x\ \textless \ 3[/latex] [latex]x\ \textless \ 0.25[/latex] (-∞;0.25) 4)  [latex]f(x)=(4x-1)(4x+1)=16x^2-1[/latex] [latex]f'(x)=32x[/latex] [latex]f'( \frac{1}{4} )=32*\frac{1}{4}=8[/latex]