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The equation for aggregate demand is defined as C+I+G+(X-M) where C is consumption by households on things such as cars, furniture and petrol, I is investment by firms in new technology, factories and invent...

A situation, allocation or outcome is Pareto efficient if no one party can be made better off without another being made worse off. The outcome of a perfectly competitive market is Pareto efficient whereas t...

There are two ways we can find the derivative of x^x. It's important to notice that this function is neither a power function of the form x^k nor an exponential function of the form b^x, so we can't use the ...

Always follow the same three steps : equating – substracting – substituting but you can have different cases : Case 1 : we only need to multiply one equation Example: 2x+5y=9 6x-4y=8 Note : Always check firs...

In Spanish there are four main ways in which the subjunctive is used. 1. Formation of the negative imperative and the formal positive imperative The exception here is no creer que 2. In subordinate clauses i...