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(sqrt(cos(x))*cos(200*x)+sqrt(abs(x))-0.7)*pow((4-x*x),0.01) (x from -1.54 to 1.54)
(sqrt(cos(x))*cos(200*x)+sqrt(abs(x))-0.7)*pow((4-x*x),0.01) (x from -1.54 to 1.54)
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