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Let T : Rn → Rn be a linear transformation that preserves lengths; that is , ||T (x)|| = ||x|| for all x in Rn.
a. Show that T also preserves orthogonality; that is
b. Show that the standard matrix of T is an orthogonal matrix.
A cylindrical container 1.7 {rm m} tall contains mercury to a certain depth, d. The rest of the cylinder is filled with water. If the pressure at the bottom of the cylinder is two atmospheres, what is the depth d?
A rectangle has perimeter 78 feet, and its area is 360 sq-feet. Find the dimensions of this rectangle. (For purposes of this problem only, the width is shorter than the length.)
Find an equation in point-normal form for the plane described by the equation 2x-3y+z=6
What is the maximum likelihood estimator of the mean of x where x is the sample with distribution f(x)=rt^x where t= 1-r and r is between 0 and 1 and the mean of rt^x is t/r.
A circular spa has a diameter of 12 feet. The spa is decorated with 4-inch porcelain tiles around the rim. How many tiles suround the spa?
Problem 1 (Compute CI for small sample using t-distribution given sample statistics). From a population of normally distributed IQ scores, a random sample of 25 scores yields sample mean as X = 98:4 and sample deviation Sx = 14:2. Find a 98% con d..
an arrow is shot into the air. it's function h= 128t-16^2 find it average velocity of the arrow over the intervals from 2 seconds to 3 seconds
A textbook store sold a combined total of 304 history and sociology textbooks in a week. The number of history textbooks sold was three times the number of sociology textbooks sold. How many textbooks of each type were sold?
Suppose that 56% of the voters in a state intend to vote for a certain candidate. What is the probability that a survey polling six people reveals that three or fewer intend to vote for that candidate? (Round your answer to 4 decimal places.)
Find the formulas for computing the check digits for the international standard book number(ISBN),for both ISBN-10 and ISBN-13.Hence find the check digit for the book with ISBN '0-8176-4227'
The simple interest formula I=prt gives the interest earned on an investment of p dollars at interest rate r for a time of t years. How much does Leroy need to invest at a rate of 7% in order to earn $420 interest in 4 years?
Find the average height of the ball over the time interval extending from the time of the ball?s release to its return to ground level. The height at time t is h(t) = 288t - 16t2
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