For the given rectangular equation, write an equivalent polar equation.x2 + y2 - 4x = 0
A. r = 4 cos ?
B. r sin2? = 4 cos ?
C. r = 4 sin ?
D. r cos2? = 4 sin ?
Answer: A
Mathematics
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Use Taylor series to evaluate the limit.
A. 
B. 0
C. 
D. 9
Mathematics
Solve the equation in the real number system.3x3 - x2 - 21x + 7 = 0
A. { -3, 
, - 
}
B. 
C. { 3, 
, -
}
D. 
Mathematics
The following is a polygonal path obtained from Euler's method with n = 4 to approximate a solution f(t) of a differential equation. Indicate whether the following statements are true or false: 
f' 
= 1
A. True B. False
Mathematics
Solve the system of equations.4x - y + 3z = 122x + 9z = -5x + 4y + 6z = -32
A. (2, 7, -1) B. (2, -7, -1) C. (2, -7, 1) D. (2, 7, 1)
Mathematics