C4 binomial expansion Watch

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Bloom
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#1
Report Thread starter 13 years ago
#1
Given that

y^2 = 1 + x / 2 + x find the values of a, b and c in the apporoximation y ~ a + bx + cx^2 where it is assuned that x is so small that its cube and higher powers of x may be neglected.
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dvs
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#2
Report 13 years ago
#2
Re-write it as:
y = (1+x)^(0.5) . (2+x)^(-0.5)

Now expand each bracket seperately, and multiply them out.
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