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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 = 28 Answers · Science & Mathematics · 19/05/2019

... 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

... 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 = 0.0014992501251 Answers · Science & Mathematics · 16/05/2019

..., 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

...(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

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

...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

... - 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

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

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