新人教版數(shù)學(xué)選修4-醫(yī)4知識點(diǎn)總結(jié)

一、方程的伸縮變換２.曲線伸縮變換的公式，求其Evaluation

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Ltd.二、極坐標(biāo)與直角坐標(biāo)的互化３.已知曲線Ｃ與曲線軸對稱，求曲線Ｃ的極坐標(biāo)方程關(guān)于Evaluation

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Ltd.三、圓和直線的極坐標(biāo)方程Evaluation

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Ltd.Evaluation

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Ltd.四、極坐標(biāo)系內(nèi)的距離問題Evaluation

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Ltd.五、常見的參數(shù)方程Evaluation

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Ltd.六、參數(shù)方程化為普通方程Evaluation

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Ltd.七、參數(shù)方程的簡單應(yīng)用Evaluation

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Ltd.Evaluation

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Ltd.3.已知直線L的參數(shù)方程是：（１）求t=1時(shí)，E對va應(yīng)l的ua點(diǎn)tiＰon坐o標(biāo)nly.ed

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Profi（２）C求op點(diǎn)yrＰig到h點(diǎn)t

2Ｍ0（04－-2１01，1２As）p的os距e

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Ltd.（３）求直線L的傾斜角（４）求直線L被曲線

截得弦長及弦中點(diǎn)坐標(biāo)Evaluation

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Ltd.四、作業(yè)，求其伸１.曲線縮變換的公式2化下列曲線的參數(shù)方程為普通方程，并指出它是什么曲線。（3）（t是參數(shù)E）va（lu2a）tion

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