1.

If \(\rm \displaystyle I_n = \int_0^a(a^2 - x^2)^n \ dx\), where n is a positive integer, then the relation between In and In-1 is:

A. \(\rm I_n = \left(\dfrac{2na^2}{2n+1}\right)I_{n-1}\)
B. \(\rm I_n = \left(\dfrac{2n^2a^2}{2n+1}\right)I_{n-1}\)
C. \(\rm I_n = \left(\dfrac{2na^2}{2n-1}\right)I_{n-1}\)
D. \(\rm I_n = \left(\dfrac{2n^2a^2}{2n-1}\right)I_{n-1}\)
Answer» D. \(\rm I_n = \left(\dfrac{2n^2a^2}{2n-1}\right)I_{n-1}\)


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