Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.
| rev | Admin | (Created page with "'''Solution: A''' <math>\begin{aligned} & 55 a_{\overline{20} \mid}=30 a_{\overline{10} \mid}+60 a_{\overline{10} \mid} v^{10}+90 a_{\overline{10} \mid} v^{20} \text { so } \\ & 55\left(1-v^{20}\right)=55\left(1-v^{10}\right)\left(1+v^{10}\right)=30\left(1-v^{10}\right)+60\left(1-v^{10}\right) v^{10}+90\left(1-v^{10}\right) v^{20} \text {. But } v^{10} \neq 1 \text { so } \\ & 55\left(1+v^{10}\right)=30+60 v^{10}+90 v^{20} \text { so } 11(1+x)=6+12 x+18 x^2 \text { wher...") | Nov 26'23 at 22:14 | +1,003 |