Code for solving simultaneous differential equations

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Dindigala Prudhvi Charan
编辑： Dindigala Prudhvi Charan 2016-6-13
Can someone help me with the code for solving two simultaneous differential equations ( Preferably RK method of order 4 ) in the form of this
  • dP/dt = a*P + b*Q
  • dQ/dt = c*P + d*Q
Initial conditions are P(0)=2 and Q(0)=1
Where a,b,c,d are constants ( I know the values of a,b,c,d just want to know in a general case )
My actual problem is much more complicated than this ( I am trying to solve a fluid dynamics problem with 10 such simultaneous differential equations )
Thanks in advance

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