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Q: Question 11 Determine the rank of the matrix. 1-2 2-3] 2-47-2 -3 6-6 9] 04 3 01 02
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- Find the kernel of the linear transformation T:R4R4, T(x1,x2,x3,x4)=(x1x2,x2x1,0,x3+x4).Let C[0, 1] have inner product [f(x), g(x)] = ∫ f(x)g(x) dx. Find α so that (x + αx2 ) ⊥ (x + 1)Calculate the rotational and divergent of the following function: 1)<y/z², z/x², x/y²> e x/y + y/z + z/x 2)<y/z², z/x², x/y²> e 1/y + 1/z + 1/x 3)<x/z², y/x², z/y²> e 1/y + 1/z + 1/x 4)<x/z², y/x², z/y²> e x/y + y/z + z/x 5)As is conservative, the rotational will be zero.
- Suppose that w and r are continuous functions on (−∞, ∞), W (x) is an invertible antiderivative of w(x), and R(x) is an antiderivative of r(x). Circle all of the statements that must be true.(a) express ux, u y, and uz as func-tions of x, y, and z both by using the Chain Rule and by expressing u directly in terms of x, y, and z before differentiating. Then (b) evaluate ux, u y, and uz at the given point (x, y, z). u = e^(qr) sin-1 p, p = sin x, q = z^2 ln y, r = 1/z; (x, y, z) = (pai/4, 1/2, -1/2)In C[0,1] with inner product defined by <f,g>=integral from 0 to 1 of f(x)g(x)dx, consider vectors 1 and x. (a) find the angle theta between 1 and x (b) determine the vector projection p of 1 onto x (c) verify that 1-p is orthoganal to p (d) compute ||1-p||, ||p||, ||1|| and verify that the pythagorean law is satisfied
- Suppose that the second order partial derivatives, fx,y and fy,x, are both continuous on an open set V in R2. Use Fubini’s theorem to prove that fx,y = fy,x in V . Hint: if fx,y(a) − fy,x(a) > 0, there is a rectangle R containing a on which fx,y − fy,x > 0.Consider the Cauchy Problem y 0 = a(x) arctan y, y(0) = 1, where a(x) is a continuous function defined on R, such that for every x it holds that |a(x)| ≤ 1. Using the Global Picard–Lindel¨of Theorem, show that there exists a unique solution y defined on R.Use the divergence theorem to solve following a) F=xi-yj bounded by the planes z=0 and z=1 and the cylinder x^2+y^2=a^2 b) F=xi+yj+(z^2 +1) with the same bounds as part a.
- Show that the following functions define an inner product on (R)2 where U= (x,y) and V= (x2,y2) a) <U,V> = 3x1x2 + y1y2 b) <U,V> = (x1x2)/2 + (y1y2)/4Find the angle between x and x4 in C[0,1] with its standard inner product.Let W(t) be the standard Brownian motion, and let X(t) = t W(1/t) for t > 0, X(0) = 0. Show that the covariance (Cov) function of X(t) is the same as the covariance function of W(t): Cov(X(t); X(s)) = Cov(W(t); W(s)) for all s; t > 0. Assuming that the paths of X(t) are continuous with probability 1, argue that X(t) is standard Brownian motion?