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Simplify the Express sec(tan1x)\sec \left( \tan ^ { - 1 } x \right)

Question 30

Multiple Choice

Simplify the express: sec(tan1x) \sec \left( \tan ^ { - 1 } x \right) .


A) 1
B) x2x ^ { 2 }
C) x\sqrt { x }
D) x2+1\sqrt { x ^ { 2 } + 1 }
E) 1x\frac { 1 } { x }
F) 1x2+1\frac { 1 } { \sqrt { x ^ { 2 } + 1 } }
G) xx2+1\frac { x } { \sqrt { x ^ { 2 } + 1 } }
H)
x2+1x\frac { \sqrt { x ^ { 2 } + 1 } } { x }

Correct Answer:

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