Evaluate :
i. \(\int(6x^5-\frac{2}{x^4}-7x+\frac{3}{x}-5+4e^x+7^x)dx\)
∫(6x5 - 2/x4 - 7x + 3/x - 5 + 4ex + 7x)dx
ii. \(\int(8-x+2x^3-\frac{6}{x^3}+2x^{-5}+5x^{-1})dx\)
∫(8 - x + 2x3 - 6/x3 + 2x-5 + 5x-1)dx
iii. \(\int(\frac{x}{a}+\frac{a}{x}+x^a+a^x+ax)dx\)
∫(x/a + a/x + xa + ax + ax)dx