\left\{ \begin{array} { l } { y = - x ^ { 2 } + 2 x + 3 } \\ { x = \frac { 3 } { 2 } } \end{array} \right.
Whakaoti mō y, x
x = \frac{3}{2} = 1\frac{1}{2} = 1.5
y = \frac{15}{4} = 3\frac{3}{4} = 3.75
Graph
Tohaina
Kua tāruatia ki te papatopenga
y=-\left(\frac{3}{2}\right)^{2}+2\times \frac{3}{2}+3
Whakaarohia te whārite tuatahi. Me kōkuhu ngā uara tāupe mōhiotia ki te whārite.
y=-\frac{9}{4}+2\times \frac{3}{2}+3
Tātaihia te \frac{3}{2} mā te pū o 2, kia riro ko \frac{9}{4}.
y=-\frac{9}{4}+3+3
Whakareatia te 2 ki te \frac{3}{2}, ka 3.
y=\frac{3}{4}+3
Tāpirihia te -\frac{9}{4} ki te 3, ka \frac{3}{4}.
y=\frac{15}{4}
Tāpirihia te \frac{3}{4} ki te 3, ka \frac{15}{4}.
y=\frac{15}{4} x=\frac{3}{2}
Kua oti te pūnaha te whakatau.
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