If f(x) = 2sin(5x) then its maximum value is ?
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Answer:
x ≤ 18°
Explanation:
0 ≤ Sin y ≤ 1
0 ≤ Sin 5x ≤ 1
sin 5x ≤ 1
5x ≤ arcsin 1
5x ≤ 90°
x ≤ 18°
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