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  1. ||u|| = √((u_1)² + (u_2)² + (u_3)²) where u = (u_1, u_2, u_3) = (2, -2, 3...3)² + (4)²) ||v|| = √(1 + 9 + 16) ||v|| = √(26) ||u|| + ||v|| = √(17) + √(26) ||u + v|| = √((u+v_1)² + (u+v_2...

    1 Answers · Science & Mathematics · 27/05/2009

  2. u - 2/3 = - 4/3 u - 3/5 Multiply everything by 15(the GCM of 3 and 5) you get 15u -10= -20u -9 15u+20u= -9 +10 35u=1 u=1/35

    3 Answers · Science & Mathematics · 09/03/2012

  3. sin(u) = 4/5 = y/z x^2 + y^2 = z^2 x^2 + 4...x^2 = 25 - 16 x^2 = 9 x = 3 1) cos(u) = x/z = 3/5 <==== positive since... to take the positive root. sin(u/2) = + √( (1-cos u)/2 ) sin(u/2) = √( (1- (3...

    3 Answers · Science & Mathematics · 17/08/2011

  4. By definition u.v x w = |v x w| |u| cosθ where θ is the angle between u and v x w... where Θ is the angle between v and w. So u.v x w = |v||w| sinΘ |u| cosθ and this is equal to |u||v...

    2 Answers · Science & Mathematics · 03/10/2009

  5. suppose u,v are in U∩V. since u.v are in U, u+v is in U, since U is a subspace. since u,v ...

    2 Answers · Science & Mathematics · 04/06/2011

  6. u = arcsin[√(x² + y²)] ∂u/∂x = 1/√[1 - (x² + y²)] • x/√(x² + ...) / √[1 - (x² + y²)] = tan[u] Note that u = arcsin[√(x² + y²)] implies that sin[u...

    1 Answers · Science & Mathematics · 18/07/2011

  7. Multiply everything by (u-1)(u-3) and then cancel identical terms to clear the fractions: (u+7...3) / (u-3) (u+7)(u-3) + (u-1)(u-3) = (u+3)(u-1) Multiply everything out: u^2 + 4u - 21 + u^2 - 4u + 3 = u^2 + 2u - 3 Combine terms: 2u^2 - 18...

    4 Answers · Science & Mathematics · 09/05/2011

  8. (u + v + w) · (u + v + w) = (u + v + w) · u + (u + v + w) · v + (u + v + w) · w = (u · u + v · u + w · u) + (u · v + v · v + w · v) + (u · w + v · w + w · w) = (u · u + 0 + 0) + (0 + v · v + 0) + (0 + 0 + w · w), since u,v,w are mutually perpendicular...

    3 Answers · Science & Mathematics · 14/06/2015

  9. sin(u) = 1/3 = y/z x^2 + y^2 = z^2 x^2 + 1^2 = 3^2 x^2 = 9 - 1 x^2 = 8 x = 2√(2) cos(u) = x/z = 2√(2)/3 sin(v) = 1/4 = y/z x^2 + y^2 = z^2 x^2 + 1^2 = 4^2...

    4 Answers · Science & Mathematics · 06/11/2011

  10. u dont u just feel it. like 4 me if i talk to someone,(a guy) for a while and i feel some sort of attraction, i just kinda get a crush on them and i know i like them

    14 Answers · Family & Relationships · 14/10/2007

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