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Maths on
.
Is given a function:
f(x)=x2 + px + q
Prove that:
f(x+1) + f(x1)= 2+2 f(x)

Maths 
Steve,
just plug in the values:
f(x+1) = (x+1)^2 + p(x+1) + q
f(x1) = (x1)^2 + p(x1) + q
add them to get
2x^2 + 2 + 2px + 2q
2(x^2+px+q) + 2
2f(x) + 2

Maths 
plsHelp,
Steve thanks very much, may i have your email id so i can ask a question with integrals/limits which i cant write here