The first moment of the shaded area with respect to the x axis is denoted by Q

Question:

The first moment of the shaded area with respect to the x axis is denoted by Qx.

(a) Express Qx in terms of r and θ.

(b) For what value of θ is Qx maximum, and what is the maximum value?



First moment of the shaded area with respect to the x axis


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