Datrys -9/2=a*(-5/8+7/2)^2+10/3

$$- \frac { 9 } { 2 } = a \cdot ( - \frac { 5 } { 8 } + \frac { 7 } { 2 } ) ^ { 2 } + \frac { 10 } { 3 }$$

Datrys ar gyfer a

$$a=-\frac{1504}{1587}\approx -0.947700063$$

Camau ar gyfer Datrys Hafaliad Llinol

Adio -\frac{5}{8} a \frac{7}{2} i gael \frac{23}{8}.

$$-\frac{9}{2}=a\times \left(\frac{23}{8}\right)^{2}+\frac{10}{3}$$

Cyfrifo \frac{23}{8} i bŵer 2 a chael \frac{529}{64}.

$$-\frac{9}{2}=a\times \frac{529}{64}+\frac{10}{3}$$

Cyfnewidiwch yr ochrau fel bod yr holl dermau newidiol ar yr ochr chwith.

$$a\times \frac{529}{64}+\frac{10}{3}=-\frac{9}{2}$$

Tynnu \frac{10}{3} o'r ddwy ochr.

$$a\times \frac{529}{64}=-\frac{9}{2}-\frac{10}{3}$$

Tynnu \frac{10}{3} o -\frac{9}{2} i gael -\frac{47}{6}.

$$a\times \frac{529}{64}=-\frac{47}{6}$$

Lluoswch y ddwy ochr â \frac{64}{529}, cilyddol \frac{529}{64}.

$$a=-\frac{47}{6}\times \frac{64}{529}$$

Lluosi -\frac{47}{6} a \frac{64}{529} i gael -\frac{1504}{1587}.

$$a=-\frac{1504}{1587}$$