Find the convergence set for the given power series. Hint: First find a formula for the nth term; then use the Absolute Ratio Test.1 +  +  +  + . . .

A. 0 ? x < 9
B. -9 < x < 1
C. -5 < x < -3
D. All x


Answer: B

Mathematics

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Use a calculator to evaluate the expression, or state that the value does not exist. Round the answer to four decimal places when necessary. coth-1   

A. -0.036 B. -0.0084 C. -0.1438 D. -0.0719

Mathematics

For the given function expressed verbally, give a graphical representation. To convert x square feet to y square yards, divide x by 9. Let y = f(x) and 0?x?100.

A.

B.

C.

D.

Mathematics

Find the quadratic function whose graph contains the given points.

A. f(x) = 4x2 - 3x - 4 B. f(x) = -4x2 - 3x + 4 C. f(x) = -4x2 - 3x - 4 D. f(x) = -4x2 + 3x - 4

Mathematics

Graph the function defined by a radical expression. Give the domain and range.y = -2 

A. Domain: [2, ?);
Range: [0, ?)

B. Domain: [-2, ?);
Range: [0, ?)

C. Domain: [-2, ?);
Range: (-?, 0]

D. Domain: [2, ?);
Range: (-?, 0]

Mathematics