Solve the following system of equation by using matlab: 3 x + 5 y + 3 z = 12 2 x + 5 y ? 2 z = 6 3 x + 6 y + 3 z = 3 2) find the root of the following equation by using matlab, error < 0.01: cos(x)= x^3 3) if y=sin(x) + exp(x^2) , integrate y from x=0 to x=1, by using matlab, error < 0.01. 4) caculate exp(3.1) by using taylor expansion and matlab, error < 0.01, at exp(3.0) .

Why is it uncommon for users to perform searches directly in database tables? a.)users are discouraged from interacting directly with tables because they might confuse tables with spreadsheets. b.) users are discouraged from interacting directly with tables because this may result in unintended changes to source data. c.)users do not have the technical skills required to perform searches directly in database tables. d.)users do not have the permissions required to perform searches directly in database tables.