[" Id radius "3" units."],[" Which of the following differential equations has "y=c_(1)e^(x)+c_(2)e^(x^(2))" as the general "],[" blution? "],[[" (a) "(d^(2)y)/(dx^(2))+y=0," (B) "(d^(2)y)/(dx^(2))-y=((2)/(4)" ec) "(d^(2)y)/(dx^(2))+1=0," (D) "(d^(2)y)/(dx^(2))-1=," particulal "]]