[求助]我笨,大家来帮帮偶.....
iou1985@2004-11-28 07:34
公式: sin(2x)=2sin(x)cos(x)kgb2000@2004-11-28 08:15
U=sinxiou1985@2004-11-28 08:34
我的意思是,把那个公式的两边都TAKE了ANTIDERIVATIVE之后,两边好象不相等,我不知道我哪里算错了,所以不明白....kgb2000@2004-11-28 09:04
ANTIDERIVATIVE之后=-(1/2)cos(2x)+C和( sin(X) )^2+Cseiyafan@2004-11-28 09:58
kgb2000's explanation is right. Any constants in a function are discarded once you take the derivative, so when you take the anti-derivative, those constants are not recoverable.iou1985@2004-11-28 11:58
原来是这样,偶忘记了C这东西呢,一直都忘记....偶真笨啊,活活