Page 104 - Math SL HB Sem 1

CIRCULAR FUNCTIONS AND TRIGONOMETRY

5. Functions ofthe form y: - f(x) and y =q-*1

For -2t !x!4r, sketch the graph ofthe lunction y: cosx and y: - cos x on the
same axes.

,
For -2 r 3 x S 4r sketch the graph of the function y : cos x and y = cos(- x) on the
same axes.

l|/hat tronsformation vould move y :cos x to y : - cos x and y: cos (-x)'l

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