请问各位前辈,我用下列语法想要解一组联立非线性常微分方程组,但是程式回传
DSolve::dvnoarg:The function N1 appears with no arguments>>
语法如下:
DSolve[{
{N1'==g1*ND1+(-g1+NA*r1)*N1-r1*N1*N1-r1*N1*N2,
N2'==g2*ND2+(-g2+NA*r2)*N2-r2*N2*N2-r2*N1*N2},
N1[0]==ND1i,N2[0]==ND2i
},{N1,N2},t]
请问要如何解这组方程组,非常感谢。