document.write( "Question 1094668: let f:A∋B:g:B∋C be function then prove that (gof)¯¹ =f¯¹
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Algebra.Com's Answer #709225 by ikleyn(52800)\"\" \"About 
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\n" ); document.write( "To improve your knowledge in the area \r
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\n" ); document.write( "\n" ); document.write( "look into and learn from this link\r
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\n" ); document.write( "\n" ); document.write( "https://www.whitman.edu/mathematics/higher_math_online/section04.06.html\r
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\n" ); document.write( "\n" ); document.write( "Your question is Example 4.6.7 of that document.\r
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