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Calculate stress and strain in round bar 12mm in diameter and 150mm long with tensile force of 400N acting on it? List of temperature in Memphis, Tennessee summer 1980? What is the product of 2 x the sum of 36,46,52,43, and 48? What is [1/cos(x)-sin(x) times tan(x)]/cos²(x)? I made a typo earlier, excuse me. I still don’t understand how to do this. Find b such that f(x)=-4(x^2)+bx+3 has a maximum value of 50?