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It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 arithmetic calculations
[1/1 Formula]
Work: Calculate the value of equation A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,8)+A(9,9)-2*(A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,2)+A(9,3)) .
Question type: Mathematical calculation
Solution:
A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,8)+A(9,9)-2*(A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,2)+A(9,3))
=3024+A(9,5)+A(9,6)+A(9,7)+A(9,8)+A(9,9)-2*(A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,2)+A(9,3))
=3024+15120+A(9,6)+A(9,7)+A(9,8)+A(9,9)-2*(A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,2)+A(9,3))
=3024+15120+60480+A(9,7)+A(9,8)+A(9,9)-2*(A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,2)+A(9,3))
=3024+15120+60480+181440+A(9,8)+A(9,9)-2*(A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,2)+A(9,3))
=3024+15120+60480+181440+362880+A(9,9)-2*(A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,2)+A(9,3))
=3024+15120+60480+181440+362880+362880-2*(A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,2)+A(9,3))
=3024+15120+60480+181440+362880+362880-2*(3024+A(9,5)+A(9,6)+A(9,7)+A(9,2)+A(9,3))
=3024+15120+60480+181440+362880+362880-2*(3024+15120+A(9,6)+A(9,7)+A(9,2)+A(9,3))
=3024+15120+60480+181440+362880+362880-2*(3024+15120+60480+A(9,7)+A(9,2)+A(9,3))
=3024+15120+60480+181440+362880+362880-2*(3024+15120+60480+181440+A(9,2)+A(9,3))
=3024+15120+60480+181440+362880+362880-2*(3024+15120+60480+181440+72+A(9,3))
=3024+15120+60480+181440+362880+362880-2*(3024+15120+60480+181440+72+504)
=3024+15120+60480+181440+362880+362880-2*260640
=3024+15120+60480+181440+362880+362880-521280
=18144+60480+181440+362880+362880-521280
=78624+181440+362880+362880-521280
=260064+362880+362880-521280
=622944+362880-521280
=985824-521280
=464544
Answer:A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,8)+A(9,9)-2*(A(9,4)+A(9,5)+A(9,6)+A(9,7)+A(9,2)+A(9,3))=464544