evaluate:f5/(6x+13+x^2)dx
evaluate:f(2x+1)/(x+1)
evaluate:fx((x^2)-1)^4dx
evaluate:f(x^2)^(1/5)
evaluate:f3(cscx)^2
evaluate:f((x^4)-(x^3))/(x^2)
evaluate:f((tanx)(secx)^3)/(1+(tanx)^2)dx
evaluate是求解的意思
急用
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