\text { 3. a). Find an antiderivative } G(x) \text { of the function } g(x)=2 x^{-3 / 5}+5 x^{3 / 7}+12 \text { . } \text { b). Are there any other functions such that } G^{\prime}(x)=g(x) ? \text { If yes, write one. }

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