- #1
SMA_01
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Homework Statement
Find coefficients A, B, and C.
f'(x)= Af(x)+Bf(x+h)+Cf(x+2h)+O(h2)
Using Taylor's Theorem.
Note: O stands for Big O in asymptotic order notation.
The Attempt at a Solution
Here are the expansions:
Bf(x+h)= Bf(x)+Bhf'(x)+(1/2)Bh2f"(x)+(1/6)Bh3f"'(x)...
Cf(x+2h)=Cf(x)+2Chf'(x)+2Ch2f"(x)+(4/3)Ch3f"'(X)...
And then I added them and factored out the coefficients
= (A+B+C)f(x)+(B+2C)hf'(x)+(1/2B+2C)h2f"(x)+...
Is this correct? I'm stuck as to what I am supposed to do next.
Thanks.
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