Find the focus and directrix of the parabola.x = 9y2

A. , x = - 
B. , x = 
C. , y = - 
D. , x = - 


Answer: A

Mathematics

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Find the first three terms of the Taylor series in x - a.sin x, a = ?

A. 1 - (x - ?)2 + (x - ?)3 - . . .
B. -(x - ?) + (x - ?)3 - (x - ?)5 + . . .
C. (x - ?) - (x - ?)2 + (x - ?)3 - . . .
D. 1 - (x - ?) - (x - ?)2 + . . .

Mathematics

Decide if the statement is true or false.1 < 0

A. True B. False

Mathematics

Find the exact value of the expression.

A.
B.
C. - 
D. - 

Mathematics

Given that line l is parallel to line m, identify the specified angles.All pairs of corresponding angles. 

A. ?1 and ?7; ?2 and ?8; ?4 and ?6; ?3 and ?5 B. ?1 and ?8; ?2 and ?7; ?4 and ?5; ?3 and ?6 C. ?3, ?4 , ?5, and ?6 D. ?1 and ?5; ?2 and ?6; ?4 and ?8; ?3 and ?7

Mathematics