What is the extreme (7x+5)/(x+9)+(8x-10)/(x+9) ?

The extreme (7x+5)/(x+9)+(8x-10)/(x+9) is None

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extreme (7x+5)/(x+9)+(8x-10)/(x+9)

extreme points

\frac{7 x + 5}{x + 9} + \frac{8 x - 10}{x + 9}

None

Solution steps

f^{'} (x) = \frac{140}{( 9 + x ) ^{2}}

Find intervals:

None

None

x - 8 3 x

f (x) = x^{2} + x y + y^{2} - 22 y + 161

f (x) = x + \frac{4}{x}, 0.2 \leq x \leq 8

f (x) = (5 - x)^{\frac{2}{3}} (1 + x)^{\frac{1}{3}}

x^{\frac{1}{3}} (x^{2} - 9)

What is the extreme (7x+5)/(x+9)+(8x-10)/(x+9) ?
The extreme (7x+5)/(x+9)+(8x-10)/(x+9) is None