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Using Maclaurin Series, the General Series Solution, with the First yxy+x2y=0y ^ { \prime \prime } - x y ^ { \prime } + x ^ { 2 } y = 0

Question 78

Multiple Choice

Using Maclaurin series, the general series solution, with the first three nonzero terms, of the differential equation yxy+x2y=0y ^ { \prime \prime } - x y ^ { \prime } + x ^ { 2 } y = 0 is


A) y=A(1+x412+x690+) +B(xx36x540) y = A \left( 1 + \frac { x ^ { 4 } } { 12 } + \frac { x ^ { 6 } } { 90 } + \cdots \right) + B \left( x - \frac { x ^ { 3 } } { 6 } - \frac { x ^ { 5 } } { 40 } - \cdots \right)
B) y=A(1+x412+x690+) +B(x+x36x540) y = A \left( 1 + \frac { x ^ { 4 } } { 12 } + \frac { x ^ { 6 } } { 90 } + \cdots \right) + B \left( x + \frac { x ^ { 3 } } { 6 } - \frac { x ^ { 5 } } { 40 } - \cdots \right)
C) y=A(1x412x690) +B(x+x36+x540+) y = A \left( 1 - \frac { x ^ { 4 } } { 12 } - \frac { x ^ { 6 } } { 90 } - \cdots \right) + B \left( x + \frac { x ^ { 3 } } { 6 } + \frac { x ^ { 5 } } { 40 } + \cdots \right)
D) y=A(1x412x690+) +B(x+x36x540) y = A \left( 1 - \frac { x ^ { 4 } } { 12 } - \frac { x ^ { 6 } } { 90 } + \cdots \right) + B \left( x + \frac { x ^ { 3 } } { 6 } - \frac { x ^ { 5 } } { 40 } - \cdots \right)
E) y=A(1x412x690) +B(x+x36x540) y = A \left( 1 - \frac { x ^ { 4 } } { 12 } - \frac { x ^ { 6 } } { 90 } - \cdots \right) + B \left( x + \frac { x ^ { 3 } } { 6 } - \frac { x ^ { 5 } } { 40 } - \cdots \right)

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