作者sd030412 (哈比神)
看板trans_math
标题[微分] 师大地科96
时间Thu Jun 30 14:17:26 2011
Find the equation of the tangent line to graph given by 2x^3+2y^3=9xy
at the point(1,2)
为什麽斜率不能直接求x微分分之y微分
然後带入= ="
答案不对...
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