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AysviL [449]
2 years ago
12

Which graph represents f(x)=−2cos(4πx)?

Mathematics
1 answer:
algol [13]2 years ago
3 0

Answer:

the last one (bottom right)

Step-by-step explanation:

4×pi is the same as twice around the whole circle to the beginning. it is the same as 0°, and cos(0) = 1, and then -2×cos(0) = -2

so, we only need to look, where the function reaches -2.

it should be at x = 0, x = 0.5 and x = 1.

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