Find the derivative of the function g(u)=7u6−8u−2g(u) = 7u^6 - 8u^{-2}g(u)=7u6−8u−2 with respect to uuu.
42u5+16u−342u^5 + 16u^{-3}42u5+16u−3
42u5−16u−342u^5 - 16u^{-3}42u5−16u−3
u7+8u−1u^7 + 8u^{-1}u7+8u−1
42u7−16u−142u^7 - 16u^{-1}42u7−16u−1