Объяснение:
f(x) = 2/(3x²-5) + ∛x
f(x) = 2/(3x²-5)=2*(3x²-5)⁻¹
f(x)¹= -1*(2*6х)*(3x²-5)⁻² +1/(3*∛х²)=-12х/(3x²-5)²+1/(3*∛х²)
f(-1)¹= -12*(-1)/(3*1-5)² +1 /(3*∛1)=12/4+1/3= 3 1/3
