Acubic polynomial v = p(u) can be written x0 + x1 u + x2 u 2 + x3 u 3 . this question has to do with the least squares optimization to determine the unknown coefficients, xi, j=0,1,2,3. assume that you are given n data points {(uj, vj), j=1,2, …, n with n> 4. write the four linear equations produced by least squares and whose solution would give the values of the xi.

Which law requires employers to provide safe working environments for their employees? a. civil rights act b. fair labor standards act c. occupational safety and health act d. wagner act

Which cultural aspect does this type of song best portray? a german polka dance

Write a program that prompts the user to input a string. the program then uses the function substr to remove all the vowels from the string. for example, if str = "there", then after removing all the vowels, str = "thr". after removing all the vowels, output the string. your program must contain a function to remove all the vowels and a function to determine whether a character is a vowel.