- Sinh=e^x - e^-x/2 tanh=e^x - e^-x/ e^x + e^-x find coshx please help!?

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Use polar coordinates to find the volume of the given solid.
Inside the sphere x^2 + y^2 + z^2 = 25 and outside the cylinder x^2 + y^2 = 4? Explain the observation HF is called a weak acid, and yet it is very reactive.? A Probability Problem!! PLEASE HELP!!!? How much money will 16,600 gallons of grapes make,if it costs $899 per ton? F(x)=3x2+x−12 f(1+squareroot of 2)?