Use forward and backward difference approximations of o(h) and a centered difference approximation of o(h2) to estimate the first derivative of the function examined in prob. 4.13(f (x) =25x3−6x2+7x −88). evaluate the derivative at x =2 using a step size of h=0.25. compare your results with the true value of the derivative. interpret your results on the basis of the remainder term of the taylor series expansion.

Prove that 16^4-2^13-4^5 is divisible by 11.

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

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.