- Write cot(arccos u) as an algebraic expression in u. How do I do this?

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How many grams of fluorine gas occupy 543.2 mL and expect 123456 Pa of pressure at 29.8 degrees Celsius? Find the value of a&b if (x^2-5x+4) is a factor of the polynomial 2x^3+ax^2+bx-4. Express in factored form.? The common ratio for the following geometric sequence 1/3 3/15 9/75 27/375? An equation of motion is given by x=at^2+bt+c where a,b,c are unknown variables. If x=position and t= time, what are dimensions of a,b,c? ? How can I learn calculus on my own?