<p>设<img alt="" width="122" height="90" style="width: 100%;height: auto;" src="https://learnfile.20230611.cn/learnAppQuestion/a1/2e/a12ea0dd30db0e18855731cc1c32a637.png">，求<img alt="" width="26" height="27" style="width: 100%;height: auto;" src="http