2021-2022英语周报八下第25期答案

15.由题意可得f(x)=(2z2 2x)e2x-2,则曲线y=f(x)在x=1处的切线斜率为4，切点为(1,1)，故切线方程为)y=4(x一1)十1=4x-3.令x=0,得y一-3，令y=0,得x=.则该切线与坐标轴分别交于点(0,一3)，(，0)，故该切线与坐标轴围成的三角形的面积为8.

书面表达One possible version:NOTICEA sports meeting will be held in the playground of our school from next Thursday to FridayAs you know, the pressure of study is very heavy now, especially for those senior 3. So the purpose of the sports meeting is to letevery student get relaxed, as a result of which we students can live happily and heal thilyEveryone is welcome to take part in it. Those who perform excellently at the sports meeting will get prizes. But don' t take theresults so serously because taking part is more important than the result. Good luck to everyone!

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