Complete the following steps to prove that when the x- and y-coordinates of a point on the

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Complete the following steps to prove that when the x- and y-coordinates of a point on the hyperbola x2 - y2 = 1 are defined as cosh t and sinh t, respectively, where t is twice the area of the shaded region in the figure, x and y can be expressed as-t e' + e¯ x = cosh t and et y = sinh t et


a. Explain why twice the area of the shaded region is given by

b. The formula for the integral in part (a) is derived:

Evaluate this integral on the interval [1, x], explain why the absolute value can be dropped, and combine the result with part (a) to show that

t = ln (x + √x2 - 1).

c. Solve the final result from part (b) for x to show that

d. Use the fact that y = √x2 - 1 in combination with part (c) to show that

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Calculus Early Transcendentals

ISBN: 978-0321947345

2nd edition

Authors: William L. Briggs, Lyle Cochran, Bernard Gillett

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