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Popular >

extreme-4x+9x^{4/9}

Solution

extreme points

- 4 x + 9 x^{\frac{4}{9}}

Solution

Minimum (1, 5)

Solution steps

f^{'} (x) = - 4 + \frac{4}{x ^{\frac{5}{9}}}

Find intervals:

Decreasing

: - \infty < x < 1,

Increasing

: 1 < x < \infty

Plug

x = 1

into

- 4 x + 9 x^{\frac{4}{9}} : 5

Minimum (1, 5)

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Frequently Asked Questions (FAQ)

What is the extreme-4x+9x^{4/9} ?
The extreme-4x+9x^{4/9} is Minimum(1,5)