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對於由參數方程作圖的問題,實際上與直角座標的作圖法是相似的,只是設一個參數值,同時求出對應的x值和y值而已. 例如:x=1-t^2, y=t^(-3)=1/t^3(t≠0). t = 1,2 3 -1 -2 x= 0 -3 -8 0 -3 y= 1 1/8 1/27 -1 -1/8. 再根據所得x,y值,在直角坐標系上描“點”, 最後將各點光滑地連成“曲線”,影像就繪成了.
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