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tiny-mole [99]
3 years ago
11

Y=x+ - 4x3 Find the two stationary points on the graph of y=x4 - 4x3

Mathematics
1 answer:
mafiozo [28]3 years ago
5 0

Answer: (0,0), (3,-27)

Step-by-step explanation:

Given

Curve is y=x^4-4x^3

The stationary point on a differentiable function is the points where the differentiation of the function is zero i.e. slope is zero at that point.

Differentiate the curve f(x)=x^4-4x^3

\Rightarrow f'(x)=4x^3-12x^2

Equate it to zero

\Rightarrow 4x^3-12x^2=0\\\Rightarrow 4x^2(x-3)=0\\\Rightarrow x=0,0,3

Put x=0,3 in the function f(x)=x^4-4x^3

\Rightarrow f(0)=0\\\Rightarrow f(3)=3^4-4(3)^3\\\Rightarrow f(3)=81-108\\\Rightarrow f(3)=-27

Therefore, the stationary points are (0,0), (3,-27)

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