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Popular >

extreme f(x)=(-21)/(x^2+3)

Solution

extreme points

f (x) = \frac{- 21}{x ^{2} + 3}

Solution

Minimum (0, - 7)

Solution steps

f^{'} (x) = \frac{42 x}{( x ^{2} + 3 ) ^{2}}

Find intervals:

Decreasing

: - \infty < x < 0,

Increasing

: 0 < x < \infty

Plug

x = 0

into

\frac{- 21}{x ^{2} + 3} : - 7

Minimum (0, - 7)

Popular Examples

inverse of f(x)=(x-14)/7 inverse

f (x) = \frac{x - 14}{7}

inverse of f(x)= 3/4 x+7 inverse

f (x) = \frac{3}{4} x + 7

critical y=5x^2-20x+2 critical points

y = 5 x^{2} - 20 x + 2

asymptotes of f(x)=e^x asymptotes

f (x) = e^{x}

f (x) = cos^{2} (2 x)

Frequently Asked Questions (FAQ)

What is the extreme f(x)=(-21)/(x^2+3) ?
The extreme f(x)=(-21)/(x^2+3) is Minimum(0,-7)