The n-th term of the expression when expanded in descending powers of is independent of . Find the value of this term.

Any idea?

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- December 22nd 2008, 02:14 AMacc100jtBinomial Theorem
The n-th term of the expression when expanded in descending powers of is independent of . Find the value of this term.

Any idea? - December 22nd 2008, 03:28 AMSkalkaz
Dear acc100jt,

the basic (how says man the "not exponent") is 2x-x^(1/2).

And the formula is

index m run from 0 to n.

For which one m is the term independent from x? - December 22nd 2008, 04:36 AMPlato
If you have not written this incorrectly, you should see that