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DSolve: The Function Y appears with no arguments

Michael Simpson
Posted 11 years ago

Hi Guys

I'm really struggling to work out with this does not work... 

DSolve[{y´[t] == (1/t)*((y^2)[t] + y[t]), y[1] = -2}, y[t], t]

I get the error message... 

DSolve::dvnoarg: The function y appears with no arguments.

I would be hugely grateful if someone were able to help me.

Many thanks

Michael
POSTED BY: Michael Simpson
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I should have said the [t] goes with all the instances of y. Should be y[t]^2
POSTED BY: Frank Kampas
Michael Simpson
Michael Simpson
Posted 11 years ago

Ok, I write DSolve[{y´[t] == (y^2 + y[t])/t, y[1] == -2}, y[t], t] in Mathematica and the result its the same, DSolve::dvnoarg: The function y appears with no arguments, what its the problem?
POSTED BY: Michael Simpson

The [t] needs to go with y, not with y^2. Also the initial condition is done with ==

POSTED BY: Frank Kampas
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