Tīpoka ki ngā ihirangi matua
Tauwehe
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Aromātai
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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

\frac{81\int \frac{x^{4}}{16}\mathrm{d}x-y^{4}}{81}
Tauwehea te \frac{1}{81}.