Expression 2: 1 half sine left parenthesis, StartFraction, pi Over 2 , EndFraction "x" , right parenthesis minus left parenthesis, 0.7 8 5 3 9 8 1 times "x" minus 0.3 2 2 9 8 2 0 times "x" cubed positive 0.0 3 9 8 4 6 times "x" to the 5th power , right parenthesis Has graph. To audio trace, press ALT+T.12sinπ2x−0.7853981·x−0.3229820·x3+0.039846·x5
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Expression 3: 1 half sine left parenthesis, StartFraction, pi Over 2 , EndFraction "x" , right parenthesis minus left parenthesis, 0.7 8 5 2 1 8 6 times "x" minus 0.3 2 1 3 5 5 times "x" cubed positive 0.0 3 6 2 1 6 7 times "x" to the 5th power , right parenthesis Has graph. To audio trace, press ALT+T.12sinπ2x−0.7852186·x−0.321355·x3+0.0362167·x5