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Using Maclaurin Series, the General Series Solution, with the First y+y=0y ^ { \prime \prime } + y = 0

Question 43

Multiple Choice

Using Maclaurin series, the general series solution, with the first three nonzero terms, of the differential equation y+y=0y ^ { \prime \prime } + y = 0 is


A) y=A(1x22!x44!) +B(xx33!+x55!) y = A \left( 1 - \frac { x ^ { 2 } } { 2 ! } - \frac { x ^ { 4 } } { 4 ! } - \cdots \right) + B \left( x - \frac { x ^ { 3 } } { 3 ! } + \frac { x ^ { 5 } } { 5 ! } - \cdots \right)
B) y=A(1x22!+x44!) +B(xx33!+x55!) y = A \left( 1 - \frac { x ^ { 2 } } { 2 ! } + \frac { x ^ { 4 } } { 4 ! } - \cdots \right) + B \left( x - \frac { x ^ { 3 } } { 3 ! } + \frac { x ^ { 5 } } { 5 ! } - \cdots \right)
C) y=A(1x22!+x44!) +B(xx33!x55!) y = A \left( 1 - \frac { x ^ { 2 } } { 2 ! } + \frac { x ^ { 4 } } { 4 ! } - \cdots \right) + B \left( x - \frac { x ^ { 3 } } { 3 ! } - \frac { x ^ { 5 } } { 5 ! } - \cdots \right)
D) y=A(1+x22!+x44!+) +B(xx33!+x55!) y = A \left( 1 + \frac { x ^ { 2 } } { 2 ! } + \frac { x ^ { 4 } } { 4 ! } + \cdots \right) + B \left( x - \frac { x ^ { 3 } } { 3 ! } + \frac { x ^ { 5 } } { 5 ! } - \cdots \right)
E) y=A(1x22!+x44!) +B(x+x33!+x55!+) y = A \left( 1 - \frac { x ^ { 2 } } { 2 ! } + \frac { x ^ { 4 } } { 4 ! } - \cdots \right) + B \left( x + \frac { x ^ { 3 } } { 3 ! } + \frac { x ^ { 5 } } { 5 ! } + \cdots \right)

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