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1. ### If R is isomomorphic to R ' then is it necessarily true that R /Kern( R ) is isomomorphic to R '?

If f is a *surjective* homomorphism from R to R ' then R /ker(f) and R '...ker(f) to f(x) is an isomorphism--- so, in particular, R /ker(f) is isomorphic to f( R ). But...

1 Answers · Science & Mathematics · 24/07/2011

2. ### what is " r " in this equation?

r -(13/3)=(3/2) r =(3/2)+(13/3) r =(9/6)+(26/6) r =35/6 r =5.8333 or 5 and 5/6

3 Answers · Science & Mathematics · 06/11/2009

3. ### How do I simplify r +4/ r ^2-1 × r ^2-16/ r +1?

r +4/ r ^2-1 × r ^2-16/ r +1 = ( r ^3 + 4 - r ^2)/ r ^2 x ( r ^3 - 16 + r )/ r = 1/ r ^3 x ( r ^3 + 4 - r ^2) x ( r ^3 - 16 + r ) = 1/ r ^3 x [ r ^3 x ( r ^3 - 16 + r ) + 4 x ( r ^3 - 16 + r ) - r ^2 x ( r ^3 - 16 + r ...

1 Answers · Education & Reference · 18/03/2014

4. ### r & s are two vectors and | r | = 5. What is the value of | r +s| when s is perpendicular to ( r +s) and |s| = 3?

| r +s|^2 = ( r +s) dot ( r +s) = | r |^2 + 2 ( r dot s) + |s|^2 Given | r | = 5, and |s| = 3 we have: = 5^2 + 2 ( r dot s) + 3^2 = 34 + 2 ( r dot s) since s is perpendicular to ( r +s), s...

2 Answers · Science & Mathematics · 18/02/2015

5. ### Solve for r ?

95.5 = (1/(1+ r )) * (29.4/ r ) = (29.4)/{(1+ r )( r )}; (95.5) {(1+ r )( r )} = 29.4; {(1+ r )( r )} = 29.4/95.5 = 0.30785 r ^2 + r = 0.30785 r ^2 + r - 0.30785 = note that ( r +1/2...

1 Answers · Education & Reference · 13/11/2007

6. ### how to calculate curl(( r _)/ r ^3)?

r = <x, y, z>, || r || = (x^2 + y^2 + z^2)^(-1/2) So, we need to compute curl <...

4 Answers · Science & Mathematics · 02/03/2011

7. ### integral from 1 to infinity r ^-3 ln( r ) dr calculus 2 help?

r ^-3 ln( r )dr u = lnr ; dv = r ^-3dr du = (1/ r )dr ; v = (-1/2) r ^-2 = (-1/2) r ^-2 ln( r ) + ∫(1/2...1/2) r ^-2 ln( r ) + [(-1/4) r ^(-2)] integrate from 1 to infinity = (-1/2) r ^-2 ln( r ) + lim(a->infinity) [(-1/4) r ^(-2)] integrate from 1 to a...

2 Answers · Science & Mathematics · 23/10/2011

8. ### What the difference between playo dvd + r and - r ??

Hi, The DVD+ R and DVD- R are competing ...the formats. However, because the DVD- R format has been in use since 1997, it has...

4 Answers · Consumer Electronics · 22/02/2007

9. ### Prove r divides b . . .?

r solves x^2 + ax + b = 0 => r * r + a* r = -b => ( r +a)* r = -b Since r ,a are integers, -b is an integer multiple of r , and so is b, hence r divides b.

3 Answers · Science & Mathematics · 03/02/2013

10. ### dvd = r and dvd- r ?

Hello, The DVD+ R and DVD- R are competing ...the formats. However, because the DVD- R format has been in use since 1997, it has...

2 Answers · Consumer Electronics · 12/02/2008