The specific volume v of a compressible fluid flowing through a section area A with mean velocityVis given by"

v=kAV

where k is a constant. If v decreases by 5% and A increases by 4%, then estimate the percentage increase inV

Thank you!

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- Jul 31st 2011, 06:04 AMRine198total differential apprximation
The specific volume v of a compressible fluid flowing through a section area A with mean velocity

**V**is given by"

v=kA**V**

where k is a constant. If v decreases by 5% and A increases by 4%, then estimate the percentage increase in**V**

Thank you! - Jul 31st 2011, 06:23 AMSironRe: total differential apprximation
What have you tried?

- Jul 31st 2011, 06:29 AMRine198Re: total differential apprximation
ive tried to do partial differentiation with dV/dr and dV/dA, but i don't know how to get rid of the k