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**Unformatted text preview: **. a x tan = Then, , sec ) ( , sec 2 2 2 2 2 a a x d a dx = + = and so + = = = = + , sin 1 cos 1 sec sec ) ( 2 2 2 2 2 3 3 2 2 3 2 2 a x a x a d a a d a a x dx and the definite integral is . 2 2 L a a GmM F + = When a >> L, the term in the square root approaches , and 2 2 a GmM F a as expected....

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