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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 1+2+3+4+5+6+7+8+9+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1 .
Question type: Mathematical calculation
Solution:
1+2+3+4+5+6+7+8+9+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=3+3+4+5+6+7+8+9+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=6+4+5+6+7+8+9+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=10+5+6+7+8+9+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=15+6+7+8+9+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=21+7+8+9+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=28+8+9+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=36+9+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=45+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=55+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=66+12+13+12+11+10+9+8+7+6+5+4+3+2+1
=78+13+12+11+10+9+8+7+6+5+4+3+2+1
=91+12+11+10+9+8+7+6+5+4+3+2+1
=103+11+10+9+8+7+6+5+4+3+2+1
=114+10+9+8+7+6+5+4+3+2+1
=124+9+8+7+6+5+4+3+2+1
=133+8+7+6+5+4+3+2+1
=141+7+6+5+4+3+2+1
=148+6+5+4+3+2+1
=154+5+4+3+2+1
=159+4+3+2+1
=163+3+2+1
=166+2+1
=168+1
=169
Answer:1+2+3+4+5+6+7+8+9+10+11+12+13+12+11+10+9+8+7+6+5+4+3+2+1=169