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  1. 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

  2. ... it seems F(x,y,z) = xz^2 i + (13y^3+tan(z)) j + + (zx^2-3y^2)k. Think of a closed hemispherical surface, the top part being the...

    1 Answers · Science & Mathematics · 18/05/2019

  3. ... fail within a 5 hour flight? Binomial Problem: {∑C(3,k)(5/10000)^k (1-5/10000)^(3-k) from k = 1 to k = 3 } = 11994001/8000000000 = 0.001499250125

    1 Answers · Science & Mathematics · 16/05/2019

  4. ..., and the bottom-right-most angle. From this quadrilateral we can find k. From k we can find h, then n and g, and so on.

    2 Answers · Science & Mathematics · 16/05/2019

  5. ...(2x).cos(2x) ← this is f(x) F(x) = (1/12).sin⁶(2x) + k ← this is the integral of f(x) → where k is a constant = (from {0} to...

    2 Answers · Science & Mathematics · 15/05/2019

  6. We don't know that ∫ 1/a dx = k + ln |a| We know that ∫ 1/a da = k + ln |a|, but what's da/dx? If...

    5 Answers · Science & Mathematics · 20/05/2019

  7. ...2/7)pik These two can be combined as y = pi/14 + (pi/7)k f_y =7*e^(-9x)*sin(-7y) when does f_y =0 when either e^(-9x) = 0 (this...

    2 Answers · Science & Mathematics · 15/05/2019

  8. ... - 20x Convert the equation to vertex form y = a(x-h)²+k, where (h,k) is the vertex. factor out the leading coefficient y = -5(...

    4 Answers · Science & Mathematics · 12/05/2019

  9. Note the following: 1 - 2[1/2 + Ce^(-2t) ] = 1 - 1 - 2Ce^(-2t) = -2Ce^(-2t) = dy/dt Basically, you wanted to show that if we plug in the given y(t) into the right side of the equation, we get its derivative.

    2 Answers · Science & Mathematics · 08/05/2019

  10. Rules (−k)^2/a^2 - (x-h)^2/b^2 = 1 , c = √(a^2+b^2) vertices (h , k+a) and (h , k-a) Foci (h , k + c) and (h , k - c) the asymptotes y - k = ±(a/b)(x-h)

    1 Answers · Science & Mathematics · 13/05/2019

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