Y=2x²+3 y'=4x
y=x³-2x y'=3x²-2
<span>-34√3 cos(930) = <span>-34√3 cos(900+30) = <span>-34√3 cos(30)= <span>-34√3 * √3/2 = -34*3/2 = -51</span></span></span></span>
<span>(c-3)×12=20-4×(c+2)
12c-36=20-4c-8
12c+4c=20-8+36
16c=48
c=48:16
с=3
</span>
15x-10-14x-7=12x-20
15x-14x-12x=-20+10+7
-11x=-3
x=3/11
Замена переменных у = sinx