Which is NOT a solution to f(x)=x^2-3x+4

a:(0,4)
b:(1.5,1.75)
c:(5,14)
d:(-1,6)

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed