Recently Asked Questions

• MO configuration
  Please give the molecular orbital configuration for N22- and O2 ... sry for asking such a li'l question... but my class notes n text buk contradict n dats leading me to damn confusion...!!! ...
  0·14· #Chemistry#Physical Chemistry
  asked2009-05-07 20:26:03
• what's d error ?????
  12 - 22 + 32 - 42 + 52 - 62 +... = ? solution : LHS = (1-2)(1+2) + (3-4)(3+4) + (5-6)(5+6) + ... = - (1+2+3+4+5+6+...) = - n(n+1)/2 .... Ans... but for odd values of n, the above expression is not correct .... lyk substitute ...
  0·3· #Mathematics#Algebra
  asked2009-05-07 03:06:37
• A nice one for u to try.!
  It is given that : If 'n' things are arranged in a row, no. of ways in which they can be deranged so that none of them occupies their original place is n!\left\{1-\frac{1}{1!}+\frac{1}{2!}-\frac{1}{3!}+...+\frac{(-1)^{n}}{n!} ...
  0·7· #Mathematics#Algebra
  asked2009-04-06 22:24:26
• Some doubts.!
  1) The value of 50C6 - 5C1.40C6 + 5C2.30C6 - 5C3.20C6 + 5C4.10C6 is 2) The minimum value of (8x^{2}+y^{2}+z^{2})(\frac{1}{x}+\frac{1}{y}+\frac{1}{z})^{2} is 3) In a ΔABC, tanB/tanC = 2/3 and tanA.tanB.tanC=6 then the value(s ...
  0·26· #Mathematics#Algebra
  asked2009-04-01 07:32:21