<img src="https://zk.995w.com/lqwvjeImg/39/3960038c12a97172d361c95bc972eb45.png">1.下列微分方程中,通解为<img src="https://zk.995w.com/lqwvjeImg/d8/d8b5f7107483071a705630ca4e7cbf83.png">的微分方程是( )<br>·<img src="https://zk.995w.com/lqwvjeImg/e0/e0b724e3450f42ed2bdcd4fd2b9799a1.png">;<br>·<img src="https://zk.995w.com/lqwvjeImg/fd/fd290e23214338be9525676581e3ed7a.png">;<br>·<img src="https://zk.995w.com/lqwvjeImg/fa/fa392a4b802518ab2d52a3d9d8610c83.png">;<br>·<img src="https://zk.995w.com/lqwvjeImg/72/72fd04f1fc0485dac792a5a7e1401cf8.png">.