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Expand (1-8x)^1/2 as far as the term in x^2
Put x= -1 to obtain an approximation to (square root of) 5
..........10
Find the next term in the expansion and hence find two values between which (square route) 5
im clueless, dont even understand the question :confused:
A quick trip through a nice lecture on the Binomial Theorem should get you started.
PHYS208 Binomial Theorem
(Thinking) so unfair, its HNC mathematic not even physics lol
weve not even been through this at college
oh well ill thank you anyway (Hi)
There are other ways to proceed.
Taylor Series?
Arbitrary coefficients.
Surely, if you have been given the problem you also have been given SOME tools.
no mate, everyone in the class has just handed in the assignment without doing the question but i dont like doing that
Is ther not just a simple tutorial, or a worked example of a the same kind of question you (or anybody) could show me, it would be a great help :)