Mathematics, 15.10.2019 20:00 renee9913
Poolelinalg4 3.2.036.(a)give an example to show that if a and b are symmetricn ✕ nmatrices, then ab need not be symmetric. a =0 22 0, b =0 11 0; but ab =2 00 2which is not symmetrica =1 11 0, b =0 11 0; but ab =1 10 1which is not symmetrica =1 21 0, b =0 11 0; but ab =2 10 1which is not symmetrica =1 01 0, b =0 11 0; but ab =0 10 1which is not symmetrica =1 21 0, b =0 12 0; but ab =4 10 1which is not symmetric(b)prove that if a and b are symmetricn ✕ nmatrices, then ab is symmetric if and only ifab = ba. suppose a and b are symmetric. then (ab)t = btat = ba. thus, ab is symmetric if and only if ab = (ab)t = ba. suppose a and b are symmetric. then (ab)t = atbt = −ab. thus, ab is symmetric if and only if −ba = (ab)t = ab. suppose a and b are symmetric. then (ab)t = ab and (ba)t = ba. thus, ab is symmetric if and only if ab = (ab)t = (ba)t = ba. suppose a and b are symmetric. then (ab)t = btat = −ba. thus, ab is symmetric if and only if −ab = (ab)t = ba. suppose a and b are symmetric. then (ab)t = atbt = ab. thus, ab is symmetric if and only if ba = (ab)t = ab. need ? read it talk to a tutor
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Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type of​ sampling? who would be excluded from the survey and how might this affect the results of the​ survey? what is the frame for this type of​ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of the​ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.
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Your weight on the moon is relative to your weight on earth. neil armstrong weighed 360 lbs. in his moon gear while on the earth, but on the moon he only weighed 60 lbs. how much would a 150 lb person weigh on the moon?
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Poolelinalg4 3.2.036.(a)give an example to show that if a and b are symmetricn ✕ nmatrices, then ab...
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