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6. Suppose that, when a function f is graphed on a semi-log plot, it appears to...
Function f is graphed. y 9 8 7 6+ y = f(x) CT 4+ 3+ 2+...
Function f is graphed. y 9 8 7 6+ y = f(x) CT 4+ 3+ 2+ 1+ H4+ 29-8-7 -6 -5 -4 3-2 1 2 3 4 5 6 7 8 9 -2 -3 4 -50 1 A 2+ M من 4 -58 -6 -8 -9 What appears to be the value of lim f(x)? 20+ 07 0-5 Unbounded Function g is graphed. → see y= g(2) 9 8 7+ 6+ 5+ 4+ es 2+ 1+ A+++ -9 -8 -7...
6. Find the value of y a. log, 3) = y b. log, = y log...
6. Find the value of y a. log, 3) = y b. log, = y log (1125) = y d. 10° = y 15 =y 1 e 50 9. 200 7. Given the function and t f(0) = 2 g(x) = 5* Draw the 2 function. Which one grows faster with increasing & 8. Plot f(x) = log, (x) = y log2 (L) =y and g(x) =
4. Let X and Y have joint probability density function f(x,y) = 139264 oray3 if 0...
4. Let X and Y have joint probability density function f(x,y) = 139264 oray3 if 0 < x, y < 4 and y> 4-1, otherwise. (a) Set up but do not compute an integral to find E(XY). (b) Let fx() be the marginal probability density function of X. Set up but do not compute an integral to find fx(x) when I <r54. (c) Set up but do not compute an integral to find P(Y > X).
Let a function f be f: R rightarrow R such that f(x) = 0 when x...
Let a function f be f: R rightarrow R such that f(x) = 0 when x lessthanorequalto 0 and f(x) = log(x) * sin(x) when x > 0. f is plotted in the figure below. a) Determine whether f is one-to-one. b) Determine whether f is onto. c) Determine whether f is total. d) Determine ranges for x and y so that f is total but not one-to-one. e) Determine ranges for x and y so that f is one-to-one,...
Consider a production function Q = 3K + 4L, when L is graphed on the x-axis...
Consider a production function Q = 3K + 4L, when L is graphed on the x-axis and K is graphed on the y-axis, the marginal rate of technical substitution is equal to A) 4/3 and the isoquant is convex to the origin. B) 4/3 and the isoquant is a straight line. C) and the isoquant is a straight line. D) 12 and the isoquant is convex to the origin.
R such that f is integrable on every [a,b] (6) Suppose f is a function and...
R such that f is integrable on every [a,b] (6) Suppose f is a function and a where b> a. Then we define the improper integral eb f(x)dx=lim | b-oo Ja f(x)da, if that limit exists. Assume that f(x) is continuous and monotonically decreasing on [0,00). Prove that Joof exists if and only if Σ f(n) converges. This result is known as the integral test for series convergence.
6. For a certain function f(x) we have: f'(x) = (x - 3)²(2x - 3) and...
6. For a certain function f(x) we have: f'(x) = (x - 3)²(2x - 3) and • f"(x) = 6(x - 3)(x - 2) (a) Use f' to find the intervals where f is increasing, the intervals where f is decreasing, the x- coordinates and nature (max, min or neither) of any local extreme values. (b) Use f" to find the intervals where the graph of f is concave up, the intervals where the graph of f is concave down...
Log(2+5) 1. Consider function f(z) sin 2 (a) Determine all singular point (s) of f enclosed...
Log(2+5) 1. Consider function f(z) sin 2 (a) Determine all singular point (s) of f enclosed in the circle C4(0) (b) Are they isolated singularities? If so, which kind of isolated singularity are they (remov- able, pole, essential)? (c) Compute the residue of f at each of these singularities (d) Evaluate the integral f f(2)dz where y is the circle Ca(0) oriented counterclockwise 1.0 0.5 -0.5 Answer key 1. (а) z0,-T, T (b) Yes. Each is a pole of order...
Suppose we are analyzing data from the exponential distribution, which has density function f (y) =...
Suppose we are analyzing data from the exponential distribution, which has density function f (y) = ò exp (-5y) for y > 0, depending on a single parameter δ > 0, The exponential distribution arises in reliability theory as the waiting time until failure of a system that is subject to a constant risk of failure δ. (a) Using a computer: plot f(y; δ) as a function of y when δ-1. What is the area under this curve, and why?...
(6) Suppose that X is an absolutely continuous random variable with density 1<I<2 f(3) = lo,...
(6) Suppose that X is an absolutely continuous random variable with density 1<I<2 f(3) = lo, otherwise. Find (a) the moment generating function MX(t). (b) the skewness of X (c) the kurtosis of X (7) Suppose that X, Y and Z are random variables such that p(X,Y) = 1 and p(Y,Z) = -1. What is p(X, Z)? Explain your answer. (8) Suppose that X, Y and Z are random variables such that p(X,Y) = -1 and p(Y,Z) = 0. What...
Function f is graphed. y 9 8 7 6+ y = f(x) CT 4+ 3+ 2+ 1+ H4+ 29-8-7 -6 -5 -4 3-2 1 2 3 4 5 6 7 8 9 -2 -3 4 -50 1 A 2+ M من 4 -58 -6 -8 -9 What appears to be the value of lim f(x)? 20+ 07 0-5 Unbounded Function g is graphed. → see y= g(2) 9 8 7+ 6+ 5+ 4+ es 2+ 1+ A+++ -9 -8 -7...
6. Find the value of y a. log, 3) = y b. log, = y log (1125) = y d. 10° = y 15 =y 1 e 50 9. 200 7. Given the function and t f(0) = 2 g(x) = 5* Draw the 2 function. Which one grows faster with increasing & 8. Plot f(x) = log, (x) = y log2 (L) =y and g(x) =
4. Let X and Y have joint probability density function f(x,y) = 139264 oray3 if 0 < x, y < 4 and y> 4-1, otherwise. (a) Set up but do not compute an integral to find E(XY). (b) Let fx() be the marginal probability density function of X. Set up but do not compute an integral to find fx(x) when I <r54. (c) Set up but do not compute an integral to find P(Y > X).
Let a function f be f: R rightarrow R such that f(x) = 0 when x lessthanorequalto 0 and f(x) = log(x) * sin(x) when x > 0. f is plotted in the figure below. a) Determine whether f is one-to-one. b) Determine whether f is onto. c) Determine whether f is total. d) Determine ranges for x and y so that f is total but not one-to-one. e) Determine ranges for x and y so that f is one-to-one,...
Consider a production function Q = 3K + 4L, when L is graphed on the x-axis and K is graphed on the y-axis, the marginal rate of technical substitution is equal to A) 4/3 and the isoquant is convex to the origin. B) 4/3 and the isoquant is a straight line. C) and the isoquant is a straight line. D) 12 and the isoquant is convex to the origin.
R such that f is integrable on every [a,b] (6) Suppose f is a function and a where b> a. Then we define the improper integral eb f(x)dx=lim | b-oo Ja f(x)da, if that limit exists. Assume that f(x) is continuous and monotonically decreasing on [0,00). Prove that Joof exists if and only if Σ f(n) converges. This result is known as the integral test for series convergence.
6. For a certain function f(x) we have: f'(x) = (x - 3)²(2x - 3) and • f"(x) = 6(x - 3)(x - 2) (a) Use f' to find the intervals where f is increasing, the intervals where f is decreasing, the x- coordinates and nature (max, min or neither) of any local extreme values. (b) Use f" to find the intervals where the graph of f is concave up, the intervals where the graph of f is concave down...
Log(2+5) 1. Consider function f(z) sin 2 (a) Determine all singular point (s) of f enclosed in the circle C4(0) (b) Are they isolated singularities? If so, which kind of isolated singularity are they (remov- able, pole, essential)? (c) Compute the residue of f at each of these singularities (d) Evaluate the integral f f(2)dz where y is the circle Ca(0) oriented counterclockwise 1.0 0.5 -0.5 Answer key 1. (а) z0,-T, T (b) Yes. Each is a pole of order...
Suppose we are analyzing data from the exponential distribution, which has density function f (y) = ò exp (-5y) for y > 0, depending on a single parameter δ > 0, The exponential distribution arises in reliability theory as the waiting time until failure of a system that is subject to a constant risk of failure δ. (a) Using a computer: plot f(y; δ) as a function of y when δ-1. What is the area under this curve, and why?...
(6) Suppose that X is an absolutely continuous random variable with density 1<I<2 f(3) = lo, otherwise. Find (a) the moment generating function MX(t). (b) the skewness of X (c) the kurtosis of X (7) Suppose that X, Y and Z are random variables such that p(X,Y) = 1 and p(Y,Z) = -1. What is p(X, Z)? Explain your answer. (8) Suppose that X, Y and Z are random variables such that p(X,Y) = -1 and p(Y,Z) = 0. What...
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