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related to: U

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. ### u -substitution problem?

∫ dx / x sqrt(x+4) u ^2 = x+4 2udu = dx ∫ dx / x sqrt(x+4) = ∫ 2u du / ( u ^2-4) u = ∫ 2 du / ( u ^2-4) = 2 ∫ du/( u +2)( u -2) 1/( u +2)( u -2) = A/( u +2) + B/( u -2) 1 = A( u -2) + B( u +2) equate the...

2 Answers · Science & Mathematics · 06/08/2010

3. ### 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

4. ### 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

5. ### 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

6. ### 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

7. ### 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

8. ### 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

9. ### 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

10. ### 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