document.write( "Question 1192968: Find f[f(-3)] when f(x) = x^2 + 1. Is this the same as f(f(x))? \n" ); document.write( "
Algebra.Com's Answer #824916 by ikleyn(52795)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "            There are two questions in your post,  therefore, \r
\n" ); document.write( "\n" ); document.write( "            I give you two answers  (one answer for each question).\r
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document.write( "(a)  To find f(f(-3)), first find f(-3) = (-3)^2 + 1 = 9 + 1 = 10.\r\n" );
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document.write( "     Then find f(f(-3)) by substituting the value of 10 instead of the interior \"f(-3)\" into the formula for f(x)\r\n" );
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document.write( "          f(f(-3))) = f(10) = 10^2 + 1 = 101.      \r\n" );
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document.write( "      It is the answer to your first question.\r\n" );
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document.write( "(b)  Next your question is whether f(f(-3)) is the same as f(f(x)).\r\n" );
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document.write( "     The answer is \"NO\", because f(f(-3)) is a number,\r\n" );
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document.write( "     while f(f(x)) is a polynomial function.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved, answered and thoroughly explained.\r
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\n" ); document.write( "\n" ); document.write( "Comment from student : Oh I was asking about the f[f(x)] If it was the same as f(f(x)) but thank you!\r
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\n" ); document.write( "\n" ); document.write( "My response : No,  your second question was different.\r
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\n" ); document.write( "\n" ); document.write( "                      Also,  I do not like when the  \"THANKS\"  comes in such curved form . . . \r
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