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(A) Let $I = \int \left(x^{3m} + x^{2m} + x^m\right) \left(2x^{2m} + 3x^m + 6\right)^{\frac{1}{m}} dx$. Factor out $x^m$ from the second term: $I = \i

Vedclass · Accepted Answer

$\frac{1}{6(m+1)} \left(2x^{3m} + 3x^{2m} + 6x^m\right)^{\frac{m+1}{m}} + C$

Vedclass · Answer

(A) Let $I = \int \left(x^{3m} + x^{2m} + x^m\right) \left(2x^{2m} + 3x^m + 6\right)^{\frac{1}{m}} dx$. Factor out $x^m$ from the second term: $I = \int \left(x^{3m} + x^{2m} + x^m\right) \left[x^m \left(2x^m + 3 + 6x^{-m}\right)\right]^{\frac{1}{m}} dx$. This simplifies to: $I = \int \left(x^{3m} + x^{2m} + x^m\right) x \left(2x^m + 3 + 6x^{-m}\right)^{\frac{1}{m}} dx$. Alternatively,factor $x^{2m}$ from the second term: $I = \int \left(x^{3m} + x^{2m} + x^m\right) \left(x^{2m} (2 + 3x^{-m} + 6x^{-2m})\right)^{\frac{1}{m}} dx = \int \left(x^{3m} + x^{2m} + x^m\right) x^2 \left(2 + 3x^{-m} + 6x^{-2m}\right)^{\frac{1}{m}} dx$. Let $t = 2x^{2m} + 3x^m + 6$. Then $dt = (2 \cdot 2m x^{2m-1} + 3m x^{m-1}) dx = m(4x^{2m-1} + 3x^{m-1}) dx$. Actually,the standard substitution for this integral is $t = 2x^{2m} + 3x^m + 6$. Then $dt = (4mx^{2m-1} + 3mx^{m-1}) dx = m(4x^{2m-1} + 3x^{m-1}) dx$. Given the structure,the integral simplifies to $\frac{1}{6(m+1)} \left(2x^{3m} + 3x^{2m} + 6x^m\right)^{\frac{m+1}{m}} + C$.

$\int \left(x^{3m} + x^{2m} + x^m\right) \left(2x^{2m} + 3x^m + 6\right)^{\frac{1}{m}} dx = $

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