ǰλãҳ > 图形的平移与旋转全章复习与巩固基础知识讲解 - 百度文库
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1.˽ƽơתĶԳƣ̽ǵĻʣ
2.ܹҪƽͼξƽơתͼΣƽͼξһλͼα任ͼΣ
3.ƽơתĶԳơԳƼϽͼƣ 4.ʶԳơƽơתʵеӦ. ֪ʶ硿
Ҫ
ҪһƽƱ任
1. ƽƵĸƽڣһͼijƶһľ룬ͼ˶ΪƽƣƽƲıͼε״ʹС Ҫڹͣ
1ƽ˶һʽͼα任һ֣ƽָƽͼͬһƽڵı任
2ͼεƽҪأһͼƽƵķͼƽƵľ룻
3ͼεƽָͼƽƣƽƺͼΣԭͼȣֻıλãıͼε״ʹС
2ƽƵĻʣһͼκƽõͼУӦ߶ƽУһֱϣȣӦ߶ƽУһֱϣȣӦȣ Ҫڹͣ
1ҪעȷҳӦ߶ΣӦǡӶȷʵ
2Ӧ߶ƽУһֱϣȡʼȿΪƽͼ֮ʣֿΪƽͼݣ 3. ƽ任 (1)ƽ
ƽı仯ɣƽֱУ(xy)()ƽaλȣԵõӦ(x+ay)((x-ay))(xy)()ƽbλȣԵõӦ(x
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y+b)((xy-b))
Ҫڹͣ۷֮ı仯ĵӦƽƱ任 (2)ͼεƽ
ƽͼε˶ƽֱϵڣһͼνƽƱ仯е궼ͬı仯仯ѭҼݲ䣻ϼ¼䡱 Ҫڹͣ
1۷֮һͼθĺ궼(ȥ)һaӦͼξǰԭͼ()ƽaλȣ궼(ȥ)һaӦͼξǰԭͼ()ƽaλȣ
2һͼx᷽y᷽ƽƺͼΣԿԭͼξһƽƵõģ
Ҫת任
1תƽڣһͼһ㰴ijתһǶȣͼ˶Ϊת.ΪתģתĽdzΪת. Ҫڹͣ
1תͼԭͼε״Сͬ״Сͬͼβһͨתõ.
2תĽǶһС360.
3תҪأתġתǶȺת˳ʱʱ뷽
ת任ʣ
һͼκתõͼУӦ㵽תĵľȣһӦתĵɵĽǶתǣӦ߶ȣӦ. תͼ裺
ٷĿҪҳתģȷת. ڷͼΣҳͼεĹؼ.
һķһĽǶȡתת߶,ӶͼиؼĶӦ.
ԭͼ᷽ʽ˳Ӧ.
ҪĶԳͼ 1ĶԳƣ
һͼijһת180㣬ܹһͼغϣô˵ͼιԳƻĶԳƣǵĶԳģͼγΪĶԳƵģ ҪڹͣĶԳƵʣ
ĶԳƵͼУӦ߶ξԳģұԳƽ֣ 2. ĶԳͼΣ
һͼijת180㣬תͼܹԭͼغϣôͼξͽĶԳͼΣĶԳ. ҪڹͣĶԳͼ裺
֪ͼε״СĸؼԳģӳ2õĶԳƵ. ԭͼε᷽ʽ˳ԳƵ㼴ͼ. 3.ͼα任ͼƵĻ
ȷͼ⼰Ҫ
2 / 9
ڷͼĻͼ
ƽơתԳƶԻͼб任ʵɻͼͼлϣ ܶͼΣͼ.
4.ƽơԳơתֱ任Ĺϵ
ͼξƽơתԳƵı任ȻӦλøıˣС״ûиı䣬ͼȫȵģ
⡿
һƽƱ任
1.2015?ĩ֪ͼѡABCƽ3λȣƽ2λȣõABC
1ͼлABC䣻 2дA䡢Bꣻ
3yǷһPʹáBCPABCȣڣֱдPꣻڣ˵ɣ
˼·㲦1ͼƽƵʻABC伴ɣ2ݸϵеλдA䡢Bꣻ3P0yٸεʽyֵɣ ⣺1ͼʾ
3 / 9
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