Prove that , if x is so small that terms in x3 and higher powers may be neglected, then http://www.mathhelpforum.com/math-help/attachments/f37/21081d1299568824-binomial-expansion-question-msp520319eed9935g5h93hf000055b8ic10787h09a9.gif [Broken]. By substituting a suitable value of x in your result, show that (11)1/2 is approximately equal to 663/200.
The Attempt at a Solution
I can solve the first part, but i have difficulty in the second part (show that (11)1/2 is approximately equal to 663/200). Can anyone help me? Thanks.
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