exam Maths Puzzle Numerical Ability

Transpose this augmented matrix:
[ 1 8 7 9 ]
[ 0 2 5 1 ]
[-4 -1 0 17]

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exam Other Question

Find the domain of y=1/(x+1)(x-3)
Write the domain in interval notation I need help with this problem. I think i know what i am doing but i am insecure. I need to know if this problem is even, odd, or neither.

f(x)= x + |X|