document.write( "Question 1087013: Find the formula for a_n if a_1 = -4 and a_5 = 16 \n" ); document.write( "
Algebra.Com's Answer #701284 by ikleyn(52767)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "It depends on which progression it is: AP or GP.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |