求微分方程的通解:[tex=5.929x1.429]45T8j2CKPH2cBTZQ4mGCA1z1QGIBZsEkkB5TcAK11O+yyU3GO1XhEMegcEmTYRrz[/tex] .
举一反三
- 已知直线的一般方程\( \left\{ {\matrix{ {x - 2y - z + 4 = 0} \cr {5x + y - 2z + 8 = 0} \cr } } \right. \), 则其点向式方程为( ) A: \( { { x - 2} \over 2} = {y \over { - 3}} = { { z - 4} \over {11}} \) B: \( {x \over 5} = {y \over { - 3}} = { { z - 4} \over {11}} \) C: \( { { x - 2} \over 5} = { { y + 1} \over { - 3}} = { { z - 4} \over {11}} \) D: \( { { x - 2} \over 2} = { { y + 1} \over { - 3}} = { { z - 4} \over {11}} \)
- 求下列微分方程的通解: 1、; 2、; 3、; 4、5629e965e4b04f4c2bf86831.gif5629e99d498e8943b8a3a8fd.gif5629e99f498e8943b8a3a8fe.gif5629e9a0498e8943b8a3a8ff.gif
- (1)5 7 9 11() () ()()(2)26 23 20 17()() 8()(3)1 2 4 7 11() () 29(4)7 3 8 3 9 3()()(5)1 1 2 3 5 8()()
- 求下列各微分方程的通解: 1、; 2、; 3、; 4、5629e5f8498e8943b8a3a840.gif5629e5c3e4b04f4c2bf86724.gif5629e5fc498e8943b8a3a842.gif5629e5c5e4b04f4c2bf86725.gif
- 执行以下语句的结果:dict1={"x":1,"y":2,"z":3}dict2={"x":4,"a":5}dict1.update(dict2) A: {"x":1,"y":2,"z":3,"x":4,"a":5} B: {"x":4,"a":5,"x":1,"y":2,"z":3} C: 有重复项,结果有误! D: {"x":4,"y":2,"z":3,"a":5}