2 years ago

Simplify 5(cis7pi/4)^4

Mathematics

1 answer:

solniwko [45]2 years ago

5 0

Answer:

-625

Step-by-step explanation:

The magnitude gets raised to the power, and the angle gets multiplied by the power:

5(cis7pi/4)^4 = (5^4)cis(4·7π/4) = 625cis(7π) = 625cis(π) = -625

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