Evaluate R y sin(xy) dA, where R = [3, 9] × [0, π]. SOLUTION 1 If we first integrate with respect to x, we get R y sin(xy) dA = π 0 9 3 y sin(xy) dx dy = π 0 x = 9 x = 3 dy = π 0 dy = π 0 = .

See attachment.

Step-by-step explanation:

The double integral is over a rectangular region.

Integrating wrt x first makes our work easier.

Whether we integrate wrt to y first or wrt x first the result is still zero.

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13

$30.32

step-by-step explanation:

65.00*.12=2.80

65.00-2.80=57.20

57.20*1.06=60.632

60.632/2=30.316