tentukan bayangan titik p(-1,4) yang di rotasikan terhadap titik 0 (0,0) sejauh 45°

[tex] \binom{ {x}^{i} }{ {y}^{i} } = \binom{ \cos(45) - \sin(45) }{ \sin(45) \cos(45) } \binom{x}{y} [/tex]
[tex] = \binom{ \frac{1}{2} \sqrt{2} - \frac{1}{2} \sqrt{2} }{ \frac{1}{2} \sqrt{2} \frac{1}{2} \sqrt{2} } \binom{ - 1}{4} [/tex]
[tex] = \binom{0}{4 \sqrt{2} } [/tex]
= (0 , 4√2)