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Q: Under what conditions is it not possible to find the inverse of a matrix?

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discriminating possible and profiable

The additive inverse of 9 is -9.

I could be wrong but I do not believe that it is possible other than for the null matrix.

Possibly under certain conditions, but not generally. Consider a nonmeasurable set A, and define f(x) = 1 if x in A 0 otherwise. Then {1} is certainly measurable but the inverse image {x | f(x) = 1} = A is not measurable.

A number and its additive inverse add up to zero. If a number has no sign, add a "-" in front of it to get its additive inverse. The additive inverse of 5 is -5. The additive inverse of x is -x. If a number has a minus sign, take it away to get its additive inverse. The additive inverse of -10 is 10. The additive inverse of -y is y.

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If an identity matrix is the answer to a problem under matrix multiplication, then each of the two matrices is an inverse matrix of the other.

discriminating possible and profiable

The additive inverse of 9 is -9.

I could be wrong but I do not believe that it is possible other than for the null matrix.

Possibly under certain conditions, but not generally. Consider a nonmeasurable set A, and define f(x) = 1 if x in A 0 otherwise. Then {1} is certainly measurable but the inverse image {x | f(x) = 1} = A is not measurable.

Yes, if stored under poor conditions

the matrix is the theory that the world as we know it today is really a computer program created by the "machine overlords of the future". it is believed to be used to keep humans under control so they have no possible way to rebel and regain control

A payoff matrix is a decision analysis tool that summarizes pros and cons of a decision in a tabular form. It lists payoffs (negative or positive returns) associated with all possible combinations of alternative actions (under the decision maker's control) and external conditions (not under decision maker's control). Also called payoff table.

A number and its additive inverse add up to zero. If a number has no sign, add a "-" in front of it to get its additive inverse. The additive inverse of 5 is -5. The additive inverse of x is -x. If a number has a minus sign, take it away to get its additive inverse. The additive inverse of -10 is 10. The additive inverse of -y is y.

Inverse psoriasis occurs in the armpits and groin, under the breasts, and in other areas where skin flexes or folds.

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