# Yahoo Web Search

1. Sort by

1. ### Find k such that f(x)= x^3 - kx^2 + kx +8 has the factor of x-4.?

synthetic division 4 | 1 -k k 8 ---------------- .....1 4 | 1.. -k....... k............ 8 ...____4____4(4-k)_____4[k+4(4-k)] .....1.. 4-k....k+4(4-k)....0 According to last column, 8 + 4[k+4(4-k)] = 0 4[k+4(4-k)] = -8 4k + 16(4 - k) = -8 4k + 64 - 16k = -8 -12k = -72...

1 Answers · Science & Mathematics · 09/11/2012

2. ### How do I solve this for k?

...you have written is evaluated like this: .030 = .22*(e^(-k))*(.005) I think you intended the exponent to be ((-k)*.005) so you should...

1 Answers · Science & Mathematics · 28/09/2013

3. ### solve for k, y = x / 1 + kx?

y = x/(1 + kx) (1 + kx)y = x y + kxy = x kxy = x - y k = (x - y)/(xy) Say, this formula looks familiar!

7 Answers · Science & Mathematics · 08/02/2010

4. ### The quadratic function Q is defined by Q(x) = kx2 − (k − 3) x + (k − 8), Determine the values of k for which Q (x) = 0 has no real roots?

(k - 3)² < 4k (k - 8) k² - 6k + 9 < 4k² - 32k 3k² - 26 k - 9...

4 Answers · Science & Mathematics · 05/10/2017

5. ### Closed form for 1/(k x (k+1) x (k+2))?

Decomposing 1/[k(k+1)(k+2)], you have: A/k + B/(k+1) + C/(k+2) = 1/[k(k+1.... Therefore: A(k+1)(k+2) + B(k)(k+2) + C(k)(k+1) = 1 which must hold true for all valid values of k. To determine...

2 Answers · Science & Mathematics · 08/09/2007

6. ### solve for k, y = x / 1 + kx?

y = x/(1 + kx) y(1 + kx) = x y + kxy = x kxy = x - y k = (x - y)/(xy) I could have sworn I already answered this one!

4 Answers · Science & Mathematics · 08/02/2010

7. ### What is the sum from k=5 to infinity of ((k-1)!*k^3)/ ((k-5)!*4!*(2^k))?

Note that Σ(k = 5 to ∞) C(k-1, k-5) k^3/2^k...to ∞) (k-1)(k-2)(k-3)(k-4) * k^3 x^k {at x = 1/2} = (1/24) x^5 * Σ(k...%29+C%28k-1%2C+k-5%29+k^3%2F2^k I hope...

1 Answers · Science & Mathematics · 29/07/2014

8. ### Find the value of k for which the line y = x+2 meets the curve y^2 + (x+k)^2 = 2?

0=< k =<4 points of intersection are (-1,1) and (-3,1...solve it with 2 quadratic equations, one for each point. You will get k. For (-1,1), k is between (0,2) For (-3,1), k is...

2 Answers · Science & Mathematics · 02/09/2008

9. ### \what is the value of k?

2kx² - 12x + (k+7) = 0 Solve for k b² - 4ac = 0 (b = -12, a = 2k and c = k...8 ..........-k² - 7k + 18 = 0 .......... k² + 7k - 18 = 0 ........ (k - 2) (k + 9) = 0 ......k - 2 = 0.......................... k + 9 = 0 k - 2 + 2 = 0 + 2...

4 Answers · Science & Mathematics · 12/09/2010

10. ### Find all integer values k for which p(x)=x³-(k+1)x+2k=0 has a rational root.?

Hello, x³ – (k + 1)x + 2k = 0 = = = = = = = = = = = = = = = = = = = = = = Obviously, if k=0, we obtain... prime and k≠0: Then 2k has four divisors: 1, 2, k and 2k. Rational root theorem induce that if a rational root exists...

2 Answers · Science & Mathematics · 10/12/2012

related to K
2. ### K | Pneumonia in Different Age

1. Try asking your question on Yahoo Answers