變換(1):把函數(shù)的圖像上每點的橫坐標(biāo)和縱坐標(biāo)都變?yōu)樵瓉淼?div id="jn3m8lx" class="MathJye" mathtag="math">
倍,再向右平移;
變換(2):把函數(shù)的圖像向右平移,再把每一點的橫坐標(biāo)和縱坐標(biāo)都變?yōu)樵瓉淼?div id="fi83838" class="MathJye" mathtag="math"> 倍;
變換(3):把函數(shù)的圖像向左平移
,再把每一點的橫坐標(biāo)和縱坐標(biāo)都變?yōu)樵瓉淼?div id="7s8m8m8" class="MathJye" mathtag="math">
倍;
變換(4):把函數(shù)的圖像向右平移
,再把每一點的橫坐標(biāo)變?yōu)樵瓉淼?div id="lt8oahk" class="MathJye" mathtag="math">
倍,縱坐標(biāo)都變?yōu)樵瓉淼?div id="v3sajo3" class="MathJye" mathtag="math">
倍;
其中能把函數(shù)y=2cos(3x+
)的圖像變?yōu)閥=3sin(2x-
)的圖像變化是
(1)(2)(3)
(1)(2)(3)
.(請把你認為正確的都填上)