Asked by anon
a. Draw the graphs of y=4cosx and y=2x-x on the same set of axes for -2π<=x<=2π
(done)
b. Explain why all these solutions of the equation 4cosx=2-x must lie between x=-2 and x=6
I've drawn the solutions but not sure how to answer the question. Thx for your help
(done)
b. Explain why all these solutions of the equation 4cosx=2-x must lie between x=-2 and x=6
I've drawn the solutions but not sure how to answer the question. Thx for your help
Answers
Answered by
oobleck
(b) why do you have 2-x must lie in [-4,4]
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