array-manipulation code snippets in matlab

a 4x4 stiffness matrix 𝑲 is given as: 𝑲 = [12 −4 −2 0 −4 10 −3 1 −2 −3 5 −1 0 1 −1 6 ]extract the third column of 𝑲 and transpose it, save it as l. in matlab

check if all inputs are positive in an image and convert to positive values if not in matlab

combine cell and double in matlab

horzcat two different sizes in matlab

how many elements are in the array [cos(0) : 0.03 : log10(1000)]. use matlab to determine the 44 th element. in matlab