i25.ii^{25}.ii25.i
−2a+18a-2a+18a−2a+18a
(4−x4)3\left(4-x^4\right)^3(4−x4)3
limx→−1(y+1y2+1)\lim_{x\to-1}\left(\frac{y+1}{y^2+1}\right)x→−1lim(y2+1y+1)
1215x4y7z−081x5y8z−3\frac{1215x^{4}y^{7}z^{-0}}{81x^{5}y^{8}z^{-3}}81x5y8z−31215x4y7z−0
tdxdt=(x+1)(t2+1)t\frac{dx}{dt}=\left(x+1\right)\left(t^2+1\right)tdtdx=(x+1)(t2+1)
22+−322+-322+−3
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