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3 years ago

I need to know the answer

Mathematics

1 answer:

Natalija [7]3 years ago

7 0

320 because you added the two numbers to get the total.

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Prove whether the following are identities 2tanh 1/2x / 1−tanh^2 1/2 x = sinh x

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Recall that

$\cosh^2(x) - \sinh^2(x) = 1$

Dividing both sides by cosh²(x) gives

$1 - \tanh^2(x) = \mathrm{sech}^2(x)$

Also, recall the identity

$\sinh(2x) = 2\sinh(x)\cosh(x)$

Then

$\dfrac{2\tanh\left(\frac x2\right)}{1 - \tanh^2\left(\frac x2\right)} = \dfrac{2\tanh\left(\frac x2\right)}{\mathrm{sech}^2\left(\frac x2\right)} \\\\ \dfrac{2\tanh\left(\frac x2\right)}{1 - \tanh^2\left(\frac x2\right)} = 2\tanh\left(\dfrac x2\right)\cosh^2\left(\dfrac x2\right) \\\\ \dfrac{2\tanh\left(\frac x2\right)}{1 - \tanh^2\left(\frac x2\right)} = 2\sinh\left(\dfrac x2\right)\cosh\left(\dfrac x2\right) \\\\\dfrac{2\tanh\left(\frac x2\right)}{1 - \tanh^2\left(\frac x2\right)} = \sinh(x)$

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3 years ago

Which statement must be true about line TU?

just olya [345]

Line tu is parallel to rs

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2 years ago

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To three decimal places, find the average value of f(x) = 2x2 + 3 on the interval [0, 2].

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3 years ago

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Answer:

Circle

Step-by-step explanation:

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Nataliya [291]

Answer:

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Step-by-step explanation:

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