解: <img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1608013935423167123342b824fb49274ad4bf8b83258image2.png"style="width:63px;height:77px;"/><br/><img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/16080139354549eb9e1e081494bb985c6e513ffdde9c6image3.png"style="width:392px;height:16px;"/> (7分)<br/><img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1608013935491d08207ed661a40d294e0cf7adc9a3df2image4.png"style="width:29px;height:17px;"/> (10分)
解: (7分) (10分)