Recent content by Saurabh

@haruspex Sir, please help me with this. I just can't figure out anything to do.

Okay I'll take care of the forum thing. :) I'm not able to express it as ##(1-r_k)^2## Can you help me out by giving a hint from which i can do. Or can you show me the approach to the problem?

I am stuck again, I could only conclude that :- f(x) = (x-1)(x(n-1) + x(n-2) + ... + x - 1) + 1 I really do not know what to do next.

where rk are the roots of , Find S. -------------- I don't have a decent approach. I am very bad at summations. Although, my friend asked me to assume complex analysis and I still couldn't do it. A simple hint to this would be appreciated. Peace.

Thanks to everyone who tried. I got the solution :) My teacher laughed at me for not getting such a simple one. Anyways, the answer is c = 8.

@haruspex please help me with this one sir! a little help will be appreciated. thank you.

Is this okay now? Please can you figure out something?

First of all, you haven't squared the distance in the solution. I don't have a clue of the calculations. And secondly, convert kilometers into meters and then square. that means 10^(8) changes to 10^(11) first since 1 km = 10^3 metres Then, squaring becomes 10^(22) rest of the method is...

<Moderator's note: Moved from a technical forum and thus no template.> where a, b, c, d and n, all are positive integers. Find the value of 'c'. ------------------------------- I don't really have a good approach for this one. I just made a substitution u = sinx + cosx I couldn't clear up...