Question

šõłve this qn of MATHŚ please....no WRØÑĢ answers ....​

Answer 1

Answer:

local maxima points are x = 0, -5, local minima point is x= -3

Step-by-step explanation:

$\frac{d}{dx} f(x) = -3x^3-24x^2-45x$

Now, $\frac{d}{dx}f(x)= 0$

►$-3x^3-24x^2-45x = 0$

►$3x^3+24x^2+45x = 0$

►3x³ + 9x²+15x²+ 45x = 0

►3x²(x + 3)+15x(x+3)=0

►(x+3)(3x²+15x)=0

►3x(x+3)(x+5)= 0

so, x= 0 , -3, -5

Again, $\frac{d}{dx}(\frac{d}{dx} f(x)) = -9x^2-48x-45$

x = 0, $\frac{d}{dx}(\frac{d}{dx} f(x)) = -45$      (maxima)

x = -3, $\frac{d}{dx}(\frac{d}{dx} f(x)) = 18$          (minima)

x = -5, $\frac{d}{dx}(\frac{d}{dx} f(x)) = -30$         (maxima)

Answer 2

Answer:

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Step-by-step explanation:

your answer is in given Attecment ...✔✔