(36х-216-х^3+6х^2-36х)/(x^2(х-6))=(6x^2-x^3-216)/x^2(x-6)=(x^2(6-x)-216)= -(x^2-216)(6-x)/(x^2(6-x))= -(x^2-216)/x^2
<span><span>1-sin2</span><span>=cos2</span><span>
ctg2</span><span>*sin2</span><span>=cos2</span><span>
cos2</span><span>+cos2</span>=2cos2</span>
n)
<span><span>sin2</span>+<span><span>cos2</span></span>=1</span>
5*6=30(5);2*9=18(3);48*2=96(16);18*2=36(6);3*7+3=24(4);3*8+6=30(5);6*5+6=36(6);3*6+3*4=30(5);9*5-3*9=18(3),всё.
dz/du=2f(cosu+cosv)*f'(cosu+cosv)*(cos'u+cos'v)=
=2f(cosu+cosv)*f'(cosu+cosv)*(-sinu)
ответ строчка 2)