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OpenStudy (anonymous):
What is the range of the function y = -3cosx + 1? ans: -4 ≤ x ≤ 4 -3 ≤ x ≤ 3 -3 ≤ x ≤ 4 -2 ≤ x ≤ 4
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OpenStudy (anonymous):
Ans : −2≤x≤4 because −1≤cos(x)≤1 so −3≤3cos(x)≤3 and finally −2≤3cos(x)+1≤4
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