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how can i proove that

  1. Proove a*sin(x)+b*sin(x+phi)=((a+b)^2*cos(phi)^1/2*sin(x+phi/2)
    1. answers icon 0 answers
    2. Anonymous asked by Anonymous
    3. views icon 445 views
  2. in a triangle abc am is a median of abc and hence bm =mc. Proove that ab+bc+ca>2am
    1. answers icon 2 answers
    2. nhps ynr asked by nhps ynr
    3. views icon 681 views
  3. (2n+7)<(n+3)proove it by mathematical induction.
    1. answers icon 3 answers
    2. Titi asked by Titi
    3. views icon 429 views
  4. How do you proove the identitytanxsin2x = 2-2cos^2x
    1. answers icon 1 answer
    2. Rachel asked by Rachel
    3. views icon 604 views
  5. n(n+1)(n+5)is a multiple of 3 proove it by mathematical induction.
    1. answers icon 2 answers
    2. Titi asked by Titi
    3. views icon 495 views
  6. given ax^2 +bx +c=0. one root is square of the other, without solving the expression proove that: c(a-b)^3 = a(c-b)^3
    1. answers icon 0 answers
    2. Edwin asked by Edwin
    3. views icon 348 views
  7. 1) Proove that for every x>=0 and 0<a<1x^a-ax<=1-a 2)prove that for 0<=x<=1: x^m*(1-x)^n<= (m^m*n^n)/((m+n)^(m+n)) can someone
    1. answers icon 1 answer
    2. david asked by david
    3. views icon 370 views
  8. common tangents pq and RS to two circles intersect at a, proove taht pq=rs
    1. answers icon 2 answers
    2. Anonymous asked by Anonymous
    3. views icon 696 views
  9. how can i proove that every vector norm on C subscript n is continuos in the vector components the set of complex numbers
    1. answers icon 0 answers
    2. emmanuel asked by emmanuel
    3. views icon 401 views
  10. Proove that half of 9 is 4...i know the answer i am just chking whether u all know the answer or not..;Pif u cut IX in
    1. answers icon 0 answers
    2. Rohit asked by Rohit
    3. views icon 382 views