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1. 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

2. which of the following values does the series sigma of k=0 to infinity of 1/((4^k)k!) represent?

https://www.wolframalpha.com/input/?i=sum(1%2F(4%5E(k)+*+k!)+,+k+%3D+0+,+k+%3D+infinity) e^(1/4)

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

3. Find a unit vector with a negative i component that is orthogonal to both i + j and i + k.?

(1/√3)(- i + j + k)

2 Answers · Science & Mathematics · 18/06/2019

4. Consider a complete graph with n vertices, and a random walker?

... that when the walker moves from a vertex , k vertices out of n-1 vertices are non...2u + 3u^2 + ...] = (1-u)[1/(1-u)^2] ← see (note) = 1/(1-u) = 1/[k/(n-1)] = (n-1)/k And k changes from n-1 to...

1 Answers · Science & Mathematics · 06/06/2019

5. write an equation for the parabola with vertex (-5,1) and directrix x=-7/2?

Vertex (h,k) = (-5,1) -p = Distance from the vertex to the directrix = -5+7/2 p = -3/2 4p...

3 Answers · Science & Mathematics · 17/06/2019

6. Need help with this math question (in picture)?

...which will satisfy the original equation unless required otherwise. θ = 3π/4 + 2kπ, k∈ℤ together with θ = 3π/4 + 2kπ, k∈ℤ Is the set of all...

8 Answers · Science & Mathematics · 05/06/2019

7. If point A, having coordinates (p,3) and point B, with coordinates (6,p) lie on the line having a slope of 2, what is the value of p?

Relationship between abscissas: p + k = 6 Relationship between ordinates: 3 + 2k = p for some real value of k (that we now cancel out via substitution) 3 + 2(6 - p) = p 15 = 3p p = 5

8 Answers · Science & Mathematics · 23/05/2019

8. Calc Help?

...subject to (x-2)^2 + y^2 - 2 = 0 We form L(x,y) = x^2 + (y-14)^2 - k( (x-2)^2 + y^2 - 2 ) Diff wrt k Lk = (x-2)^2 + y^2 - 2 = 0...

1 Answers · Science & Mathematics · 14/06/2019

9. exponetial?

...approximately equal to 2.71828 t is the amount of time (in this case years) k is the decay (or grown if positive) constant. Looking at the graph...

3 Answers · Science & Mathematics · 13/06/2019

10. 2 d^2 X/dt^2 + 5 dx/dt + 2x = 5 sin t ?

...39; + 2X = 0, assume X = e^(kt), you get 2k^2 + 5k + 2 = 0 => (2k + 1)(k + 2) = 0 => k = -1/2 or -2. So X_h = Ae^(-1/2 t) + Be...

2 Answers · Science & Mathematics · 26/05/2019

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