1 2 2 2 2 2 2 2 2 12 cos 036cos 4 16 cos 016cos 2

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122222222'( )'( )1.2cos0.36cos41.6cos0.16cos,( )20.4sin()20.4sin()4.477dtx ty tttttherey tttttTime1022)20.4cos0.6cos20.4cos(0)20.40,0.6cos(0)0.6( )( )0.6cos20.4cos4.007ctSlopeisttsf t dtwhere f ttts16. Compute the surface area of the surface obtained by revolving the given curve about the indicated axis.{244xtyt, 12t(a) about the x-axis(b) about x= 4WA 3, p. 9
222222221)'( )4'( )42( )'( )'( )2404463.812baax tdtty tdttSAy tcx ty tdttSAtdttSA22222221)'( )4'( )42( )'( )'( )2444450.9babx tdtty tdttSAx tdx ty tdttSAtdttSASection 9.42. Plot the given polar points (r, θ) and find their rectangular representation.
8. Find all polar coordinate representations of the given rectangular point.(–1, 1)
12. Find all polar coordinate representations of the given rectangular point.( 2,5)

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