r1*x1*(1-x1/n1-s1*x2/n2)
r2*x2*(1-s2*x1/n1-x2/n2)

x1'[t]==r1*x1[t]*(1-x1[t]/n1-s1*x2[t]/n2),x2'[t]==r2*x2[t]*(1-s2*x1[t]/n1-x2[t]/n2),x1[0]==15,x2[0]==20

s1=1.2;s2=0.5;r1=0.125;r2=0.105;n1=25;n2=30;
dx1
dx2


