函數(shù)y=sinx的圖像向左平移派/3個(gè)單位長(zhǎng)度,橫坐標(biāo)變?yōu)樵瓉淼?倍,然后縱坐標(biāo)變?yōu)樵瓉淼?倍,則新圖像對(duì)應(yīng)的函數(shù)的單調(diào)遞增區(qū)間為
向左平移π/3得y=sin(x+π/3)
橫坐標(biāo)變?yōu)樵瓉淼?倍得y=sin(x/2+π/3)
縱坐標(biāo)變?yōu)樵瓉淼?倍,得y=2sin(x/2+π/3)
新圖像對(duì)應(yīng)的函數(shù)的單調(diào)遞增區(qū)間為
2kπ-π/2