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1. ### Prove span(u,v,w) = span(u,v) <=> u,v,w are LD?

If u and v are linearly independent, then whenever c1 u + c2 v = 0 (a zero vector), then c1 = c2 = 0 (as scalars). Also note that span(u, v) for example equals the set of all {c1 u + c2 v} where c1 and c2 range over...

1 Answers · Science & Mathematics · 22/03/2012

2. ### how can u no if a guy likes u?

u cant know 100%.. well, to know for sure, ask him directly. but to try to be sure abt his feelings, try the following: u knw he likes u back if: -he txts u bak wenever u txt him..thus...

7 Answers · Family & Relationships · 22/12/2006

3. ### 15 RANDOM QUESTIONS ABOUT U!?

 What color hair do u have? Dark brown. (:  What color eyes do u have? Once...15 pull-ups/chin-ups? Yessir.  What kinda pizza do u like? You know ;] the good stuff.  Are u outgoing? Sometimes...

40 Answers · Entertainment & Music · 07/08/2009

4. ### sec(arctan u + arccos v)?

sec [ arctan(u) + arccos(v)] let arctan(u) = A tan A = u ==> opposite side = u and adjacent side = 1, hypotenuse = √(u^2 + 1) sin A = u / √(u^2 + 1) ------(1) and cos A = 1 / √(u^2 + 1...

1 Answers · Science & Mathematics · 27/07/2010

5. ### Proof that Proj-u-V is orthogonal to Orth-u-V?? ?

I'll let P(u) denote the projection of u along V and O(u) = u - P(u). ...let be the dot product. We want to show, for all w in V, that (O(u),w) = (u-P(u),w) = ((u-v),w) = 0. Well, how do we find v? v ...

1 Answers · Science & Mathematics · 23/01/2009

6. ### Let U and W be subspaces of R3?

Since dim U = 1, we have that U = span{u} for some u in U. Likewise, dim... otherwise. Then, there exists a nonzero vector v in U ∩ W. So, v = au for some nonzero scalar a and v = bv + cw for some ...

1 Answers · Science & Mathematics · 02/02/2015

7. ### u over 5 plus u over 10 minus u over 6 equals 1?

(u/5) + (u/10) - (u/6) = 1 First thing I would do is multiply everything by 30 to get rid of all the fractions 6u + 3u - 5u = 30 9u - 5u = 30 4u = 30 u=30/4=7.5 _/

1 Answers · Education & Reference · 24/08/2008

8. ### Find u x v and show that it is orthogonal to both u and v?

u x v=(u2v3-u3v2)i+(u3v1-u1v3)j+(u1v2-u2v1)k u x v=(2*0-3*1)i+(3*0-3*0)j+(-3*1-2*0) =(-3,0,-3) To show that u...

1 Answers · Science & Mathematics · 18/03/2012

9. ### Let u = (2,-2,3) and v = (1,-3,4)?

||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

10. ### Need help solving for U.?

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 · 08/03/2012