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The Improper Integral 1x2+1dx\int _ { - \infty } ^ { \infty } \frac { 1 } { x ^ { 2 } + 1 } d x

Question 141

Multiple Choice

The improper integral 1x2+1dx\int _ { - \infty } ^ { \infty } \frac { 1 } { x ^ { 2 } + 1 } d x is


A) - \infty
B) π2\frac { \pi } { 2 }
C) 54\frac { 5 } { 4 }
D) π\pi
E) \infty

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