3 years ago

Evaluate the piecewise function for the given values of x by

Mathematics

1 answer:

lara31 [8.8K]3 years ago

5 0

Answer:

s'il vous plaît vous pouvez me aider à ma dernière question ??

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Which expression is equivalent to the given expression?

PSYCHO15rus [73]

Answer:

-5(y - 3)(y - 7)

Step-by-step explanation:

Factor -5 out of all 3 terms:

-5(y^2 - 10y + 21)

Continue the factoring:

-5(y - 3)(y - 7)

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3 years ago

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3 years ago

-64=(2cos(pi/2)+2i sin(pi/2))^n..... n=??

zvonat [6]

Answer:

The real solution is $n=6$ .

Step-by-step explanation:

$\cos(\frac{\pi}{2})=0$ while $\sin(\frac{\pi}{2})=1$

So the equation becomes:

$-64=(2(0)+2i(1))^n$

$-64=(0+2i)^n$

$-64=(2i)^n$

We know that $2^6=64$ . So let's see what $n=6$ gives us:

$(2i)^6=64i^6=64i^4i^2=64(1)(-1)=-64$ .

$-64$ is the result we wanted.

$n=6$ is therefore a solution.

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3 years ago