Question

In: Advanced Math

Let x = (1,1) and y = (3,1). 1. Find an explicit hyperbolic isometry f that...

Let x = (1,1) and y = (3,1).

1. Find an explicit hyperbolic isometry f that sends the semicircle that x and y lie on to the positive part of the imaginary axis. Write f as a composition of horizontal translations, scalings, and inversions.

2. Compute f(x) and f(y).

3. Compute d_{H^2}(f(x),f(y)) and verify that f is an isometry.

Solutions

Expert Solution


Related Solutions

Let f(x, y) = xy3 − x 2 + 2y − 1. (a) Find the gradient...
Let f(x, y) = xy3 − x 2 + 2y − 1. (a) Find the gradient vector of f(x, y) at the point (2, 1). (b) Find the directional derivative of f(x, y) at the point (2, 1) in the direction of ~u = 1 √ 10 (3i + j). (c) Find the directional derivative of f(x, y) at point (2, 1) in the direction of ~v = 3i + 2j.
Let X and Y be random variables such that Y|X ∼ Gamma(3,1/X) X ∼ Gamma(3,3). (d)...
Let X and Y be random variables such that Y|X ∼ Gamma(3,1/X) X ∼ Gamma(3,3). (d) Find EY . Hint: Use iterated expectation. (e) Find E(1/X2). (f) Find VarY . (g) Find Cov(X,Y ). (h) Find corr(X,Y ).
Let f(x,y)= (3/2)(x^2+y^2 ) in 0≤x≤1, 0≤y≤1. (a) Find V(X) (b) Find V(Y)
Let f(x,y)= (3/2)(x^2+y^2 ) in 0≤x≤1, 0≤y≤1. (a) Find V(X) (b) Find V(Y)
G1. Let f(x, y) = 1 for 0 < x < 1 and x < y...
G1. Let f(x, y) = 1 for 0 < x < 1 and x < y < (x + 1); and 0 otherwise. Find the correlation coefficient for this X and Y . (Hint: the answer is p (1/2) = 0.7071. See if you know all of the steps needed to get there.)
Find the absolute max and min in [-1,1] for f(x)=ln(x2+x+1)
Find the absolute max and min in [-1,1] for f(x)=ln(x2+x+1)
Let X and Y have joint pdf f(x,y)=k(x+y), for 0<=x<=1 and 0<=y<=1. a) Find k. b)...
Let X and Y have joint pdf f(x,y)=k(x+y), for 0<=x<=1 and 0<=y<=1. a) Find k. b) Find the joint cumulative density function of (X,Y) c) Find the marginal pdf of X and Y. d) Find Pr[Y<X2] and Pr[X+Y>0.5]
Let X and Y have the following joint density function f(x,y)=k(1-y) , 0≤x≤y≤1. Find the value...
Let X and Y have the following joint density function f(x,y)=k(1-y) , 0≤x≤y≤1. Find the value of k that makes this a probability density function. Compute the probability that P(X≤3/4, Y≥1/2). Find E(X). Find E(X|Y=y).
Let f(x,y) = 3x^2 + 6xy a) find the rate of change of f at the...
Let f(x,y) = 3x^2 + 6xy a) find the rate of change of f at the point P(3,2) in the direction of u = [3,4] b) In what direction does f have the maximum rate of change? what is the maximum rate of change?
1 Let f(x, y) = 4xy, 0 < x < 1, 0 < y < 1,...
1 Let f(x, y) = 4xy, 0 < x < 1, 0 < y < 1, zero elsewhere, be the joint probability density function(pdf) of X and Y . Find P(0 < X < 1/2 , 1/4 < Y < 1) , P(X = Y ), and P(X < Y ). Notice that P(X = Y ) would be the volume under the surface f(x, y) = 4xy and above the line segment 0 < x = y < 1...
The curried version of let f (x,y,z) = (x,(y,z)) is let f (x,(y,z)) = (x,(y,z)) Just...
The curried version of let f (x,y,z) = (x,(y,z)) is let f (x,(y,z)) = (x,(y,z)) Just f (because f is already curried) let f x y z = (x,(y,z)) let f x y z = x (y z)
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT