Question

номер: 190 помогите

Answer 1

f(x)=x⁴/4-x³/3-x²
f`(x)=x³-x²+-2x≤0
x(x²-x-2)≤0
x(x-2)(x+1)≤0
-∞_____-_____-1_____+_____0_____-_____2_____+______+∞
x∈(-∞;-1]U[0;2].
f(x)=x⁴-2x³+3
f`(x)=4x³-6x²≤0
2x²(2x-3)≤0
x²(2x-3)≤0
x²≥0   ⇒
2x-3≤0
x≤1,5
x∈(-∞;1,5].