Official papers

Official 2019 Paper 1 · Q13

Paper 1Trigonometry

Find the maximum value of

4sin⁡x−4×2sin⁡x+1744^{\sin x}-4\times2^{\sin x}+\frac{17}4

for real xx.

A14\frac14
B52\frac52
C132\frac{13}2
D212\frac{21}2
E654\frac{65}4
FThere is no maximum value.

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