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calculus - If $f

Webf (x) = sin x / cos x = tan x. Therefore, f’ (x) = (sec x) ^2. If you didn’t remember that sin x / cos x = tan x, then you can use the quotient rule on sin x / cos x. Quotient Rule: (f / g)’ = [g*f’ - f*g’] / g^2 f’ (x) = [cos x*cos x - sin x * (-sin x)] / (cos x)^2 = [ (cos x)^2 + (sin x)^2] / (cos x)^2 = 1 / (cos x)^2 = (sec x)^2 Matt Jennings Web15 jul. 2009 · 3x means ‘x’ is being multiplied by 3. you have the answer, 81, so you can use logic to determine that if 3 times ‘x’ is 81, then 81/3, or 81 divided by 3, equals ‘x’. answer is 4 i have been in the military for 5 years now and this question was apart of our first testing and answer is 4. sve o braku 25 epizoda sa prevodom

What x what equals 81? - Answers

WebShow that f(x)=81(1+x)−9/8 is a probability density function on [0,∞); then find the indicated probabilities. Choose the procedure below that you would use to show that f(x) is a probability density function on [0,∞). A. Show that all values of f(x) in the interval are positive or zero, and that the integral of f(x) from −∞ to ∞ ... Web14 jun. 2015 · Sorted by: 3. Look at the decomposition. x 4 − 18 x 3 − 81 x 2 − 12 = x 2 ( x 2 − 18 x − 81) − 12. Observe the roots of the equation x 3 − 9 x − 5 = 0 must belong to the following two intervals: ( − 3, − 2) and ( 3, 4). The axis of symmetry of this function f = x 2 − 18 x − 81 is x = 9, so the trend of the function is ... Web4x2=81 Two solutions were found : x = 9/2 = 4.500 x = -9/2 = -4.500 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ... (2x2) = 8 http://www.tiger-algebra.com/drill/ (2x~2)=8/ barudin