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20-06-2018
Mathematics

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The range of f(x)= 5cosx is

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20-06-2018

Hello,

[tex]-1 \leq cos(x) \leq 1\\ \Rightarrow\ -1*5 \leq 5*cos(x) \leq 5*1\\ \Rightarrow\ -5 \leq f(x) \leq 5\\ [/tex]

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