Input:
rsolve(y(x+2)-y(x+1)-y(x)=0)
Write:
rsolve(y(x+2)-y(x+1)-y(x)=0)
Output:
rsolve(y(x+2) - y(x+1) - y(x)=0)== C_1\ fibonacci(x)+C_2\ lucas(x)
(d^1.6y)/(dx^1.6)-2(d^0.8y)/dx^0.8+y-exp(x)=0
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