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1. ### For what values of k is limx→∞(coshkx)/(sinh3x) finite?

...e^(kx) - e^(-kx) ] / [ e^(3x) + e^(-3x) ] When x is large and assume k >= 0 sinh(kx) / cosh(3x) ≈ e^(kx) / e^(3x) = e^(x(k - 3)) For sinh(kx...

1 Answers · Science & Mathematics · 21/02/2019

2. ### Suppose 1 ≤ k ≤ n − 1 and gcd(k, n) = 1. Prove that gcd(n − k, n) = 1.?

GCD(k,n) = 1 means that k and n have no common divider . Similarly , GCD(n-k,n) = 1 means that n-k and n have no common divider . Assume that n-k and n have a common divider c...

1 Answers · Science & Mathematics · 26/09/2018

3. ### How to find the number or numbers that can replace k?

Replace x with k and y with 2 in x + 2y = 5: k + 2(2) = 5 k = 5 - 4 k = 1

4 Answers · Science & Mathematics · 25/02/2019

4. ### Find m - k?

(0.0015/0.03)*10^(m-k) = 5 * 10^7 => (15/300)*10^(m-k) = 5*10^7 => 0.05*10^(m-k) = 5*10^7 => 10^(m-k) = 10^9 => m-k = 9

4 Answers · Science & Mathematics · 10/02/2019

5. ### Advanced algebra. Solve for k?

... want 1k. So divide both sides of = by 3 33/3 = 3k/3 11 = k Verify LS 4k + 39 4(11) + 39 44 + 39 = 83 RS 7k + 6 7(11...

6 Answers · Science & Mathematics · 22/11/2018

6. ### (k-1)•x^2 + (k-5)•x^2 - (k+2) =0 For which value of k is x1^2 + x2^2 <2?

...model. However, you need to check for accuracy ----- add (k+2) to both sides (k-1)x^2 + (k-5)x^2 = k+2 factor...x2) The question then becomes: finding k such that 2x^2 < 2 divide both sides by...

3 Answers · Science & Mathematics · 12/07/2018

7. ### Find k For Quadratic Equation?

x^2 - kx + 4 = 0 apply the discriminant formula a = 1 , b = - k, c = 4 b^2 - 4ac = 0 (-k)^2 - 4(1)(4) = 0 k^2 - 16 = 0 k^2 = 16 k = √(16) k = 4 answer// x^2 - 4x + 4 = 0 (x - 2)(x - 2) = 0 x = 2

8 Answers · Science & Mathematics · 19/05/2019

8. ### Express the sum n sigma (5k/3n) k=1 in closed form.?

[k = 1 to n] ∑ (5k)/(3n) ... if you meant something else please confirm. = (5/(3n)) [k = 1 to n] ∑ k = (5/(3n)) n(n+1)/2 = 5(n+1)/6

1 Answers · Science & Mathematics · 04/05/2019

9. ### Find Value of k?

then f(-2) = 0 or (-2)^4 - k*(-2)^3 + 1 = 0 16 - 8k + 1 = 0 k = -17/8

2 Answers · Science & Mathematics · 07/06/2019

10. ### Vector linear algebra notation I,j,k?

... to 2*1 + 3*2 + 1*3 = 11, which is a single number. i, j and k are unit vectors in the x, y and z directions. xi + yj +zk...

2 Answers · Science & Mathematics · 02/08/2018