document.write( "Question 952828: Show that (cosh x)^2−(sinh x)^2= 1
\n" ); document.write( "for every real number x. \n" ); document.write( "

Algebra.Com's Answer #581873 by Alan3354(69443) $\"\"$ $\"About$

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Show that (cosh x)^2 - (sinh x)^2= 1
\n" ); document.write( "for every real number x.
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\n" ); document.write( " $\"%28e%5Ex+%2B+e%5E%28-x%29%29%5E2%2F4+-+%28e%5Ex+-+e%5E%28-x%29%29%5E2%2F4+=+1\"$
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\n" ); document.write( " $\"%28e%5E%282x%29+%2B+e%5E%28-2x%29+%2B+2+-+e%5E%282x%29+%2B+e%5E%28-2x%29+%2B+2%29%2F4+=+1\"$
\n" ); document.write( "4/4 = 1
\n" ); document.write( " \n" ); document.write( "

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