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At a constant temperature, the number of moles (n) of an ideal gas is a function...

At a constant temperature, the number of moles (n) of an ideal gas is a function of two variables ? = ?(?, ?) where P is the pressure and V is the volume (Remember the ideal gas law ?? = ???, where R is the universal gas constant). The number of moles function is given as ? = ?(?, ?) = −? 2 + 4? − ? 2 + 6?. Find the maximum and minimum values of the number of moles if pressure is changing between [0,4] atmospheres while volume is changing between [0,5] liters..

Math   Calculus   
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