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inysia [295]
2 years ago
13

F(x) = −7x −1f( ??? ) = -8

Mathematics
1 answer:
Viefleur [7K]2 years ago
8 0

Answer:

f(1)

Step-by-step explanation:

f(x) = -7x -1

f(1) = -7×(1)-1

= -7-1 [- × - = +] and the sign is taken -ve bacause the higher value digit contain -ve sign

= -8

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Ohh wow nice, do your own work lazy person
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3 years ago
Help with num 9 please. thanks​
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Answer:

See Below.

Step-by-step explanation:

We want to show that the function:

f(x) = e^x - e^{-x}

Increases for all values of <em>x</em>.

A function is increasing whenever its derivative is positive.

So, find the derivative of our function:

\displaystyle f'(x) = \frac{d}{dx}\left[e^x - e^{-x}\right]

Differentiate:

\displaystyle f'(x) = e^x - (-e^{-x})

Simplify:

f'(x) = e^x+e^{-x}

Since eˣ is always greater than zero and e⁻ˣ is also always greater than zero, f'(x) is always positive. Hence, the original function increases for all values of <em>x.</em>

8 0
3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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To find the slope between the points, you would go through this process
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