Useful factorization formula Calculate the following limits using the factorization formula x n − a n = ( x − a ) ( x n − 1 + x n − 2 a + x n − 3 a 2 + ⋯ + x a n − 2 + a n − 1 ) , where n is a positive integer and a is a real number . 75. lim x → 1 x 3 − 1 x − 1 ( Hint: x − 1 = ( x 3 ) 3 − ( 1 ) 3 .)
Useful factorization formula Calculate the following limits using the factorization formula x n − a n = ( x − a ) ( x n − 1 + x n − 2 a + x n − 3 a 2 + ⋯ + x a n − 2 + a n − 1 ) , where n is a positive integer and a is a real number . 75. lim x → 1 x 3 − 1 x − 1 ( Hint: x − 1 = ( x 3 ) 3 − ( 1 ) 3 .)
Solution Summary: The author evaluates the value of undersetxto 1mathrmlimsqrt by using factorizing formula.
Points z1 and z2 are shown on the graph.z1 is at (4 real,6 imaginary), z2 is at (-5 real, 2 imaginary)Part A: Identify the points in standard form and find the distance between them.Part B: Give the complex conjugate of z2 and explain how to find it geometrically.Part C: Find z2 − z1 geometrically and explain your steps.
A polar curve is represented by the equation r1 = 7 + 4cos θ.Part A: What type of limaçon is this curve? Justify your answer using the constants in the equation.Part B: Is the curve symmetrical to the polar axis or the line θ = pi/2 Justify your answer algebraically.Part C: What are the two main differences between the graphs of r1 = 7 + 4cos θ and r2 = 4 + 4cos θ?
A curve, described by x2 + y2 + 8x = 0, has a point A at (−4, 4) on the curve.Part A: What are the polar coordinates of A? Give an exact answer.Part B: What is the polar form of the equation? What type of polar curve is this?Part C: What is the directed distance when Ø = 5pi/6 Give an exact answer.
Chapter 2 Solutions
Single Variable Calculus: Early Transcendentals Plus MyLab Math with Pearson eText -- Access Card Package (2nd Edition) (Briggs/Cochran/Gillett Calculus 2e)
Elementary Statistics: Picturing the World (7th Edition)
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