< img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/149500792968109955b103b0047668cdaa70b899b65e7image97.png" ><br>A cos(5x+7)/5+C<br>B cos(5x+7)/5-C<br>C cos(5x-7)+c<br>D cos(5x+7)+c

< img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/149500792968109955b103b0047668cdaa70b899b65e7image97.png" >
A cos(5x+7)/5+C
B cos(5x+7)/5-C
C cos(5x-7)+c
D cos(5x+7)+c

出自：延安大学经济数学(专升本)1

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