document.write( "Question 1154021: limit x->0 (e^x^2 - e^x^3)/3x^2
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Algebra.Com's Answer #776432 by ikleyn(52863)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Start from standard expansion of Calculus for \"e%5Et\"\r\n" );
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document.write( "    \"e%5Et\" = 1 + t + \"t%5E2%2F2\" + \"t%5E3%2F3%21\" + . . .               (1)\r\n" );
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document.write( "Substitute one time  t = x^2  into expansion  (1)  to get\r\n" );
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document.write( "    e^(x^2) = 1 + x^2 + \"x%5E4%2F2\" + \"x%5E6%2F6\" + . . .         (2)\r\n" );
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document.write( "Substitute next time  t = x^3  into expansion  (1)  to get\r\n" );
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document.write( "    e^(x^3) = 1 + x^3 + \"x%5E6%2F2\" + \"x%5E9%2F6\" + . . .         (3)\r\n" );
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document.write( "Subtract (3) from (2). You will get\r\n" );
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document.write( "    e^(x^2) - e^^(x^3) = x^2 - x^3 + the terms of the converging series with degrees of  \"x\"  higher than or equal to 4.\r\n" );
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document.write( "Therefore\r\n" );
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document.write( "    \"%28e%5E%28x%5E2%29+-+e%5E%28x%5E3%29%29%2F%28x%5E2%29\" = 1 - x + the terms of the converging series with degrees of  \"x\"  higher than or equal to 2.     (4)\r\n" );
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document.write( "Thus, when you take the limit at x--> 0 of  \"%28e%5E%28x%5E2%29+-+e%5E%28x%5E3%29%29%2F%283x%5E2%29\",  you will get  \"1%2F3\".     ANSWER\r\n" );
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document.write( "The rest of the terms contribute 0 (zero) to this limit.\r\n" );
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\n" ); document.write( "\n" ); document.write( "I wrote this post, because arguments of @MathLover1 are   I N V A L I D.\r
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\n" ); document.write( "\n" ); document.write( "Had I answered this question as @MathLover1 did it,  with expressions   \"0%2F0\"   on the way,  I would loose my reputation  FOREVER\r
\n" ); document.write( "\n" ); document.write( "in the eyes of my teachers.\r
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