Construct truth tables for each of the following sentences:

a. (s ∧ t)∨ ∼ (s ∨ t) b.(s∨t) ⇒(s∧t)

b.(s∨t) ⇒(s∧t)

Least square fit to polynomial write a function leastsquarefit3pol that solves a linear system of equations to find a least squares fit of a third order polynomial to an experimental data set given as two row arrays. the function leastsquarefit3pol must explicitly solve a set of linear equations and cannot use polyfit. there should be no restriction on the size of the problem that can be solved.

How do you know if the website is secure if you make a purchase

Hazel has just finished adding pictures to her holiday newsletter. she decides to crop an image. what is cropping an image?