(1) 10 * 6 = 5 *10-0.5 * 6 (where a stands for10 and b stands for 6) 6 *10 = 5 * 6-0.5 */kloc.
(2)5△( 10△ 15) This question is calculated in the order of operation, first in parentheses, then outside parentheses. So10 △15 = (10+15)+5 = 30.
(3) 169 @ 13 =169/13 * 2+3 *169-13 (where a stands for169.
(4) This question is the same as the second question. Calculate .2 * x = 2 * x-2-x+1in brackets first, and then calculate what is outside brackets. At this time, (2 * x-2-x+ 1) is regarded as a whole, and as a, there is (2 * x-0).
(5) (194 ◎195) ◎ (195 ◎196) ◎ (197 ◎ 65438+.It can be seen that everything in brackets is odd and even, and the second formula is applicable. 195 ◎197 ◎198 ◎199 ◎ 200. Then, you can count one in sequence, for example, 165.
2002 ◎ 2004 ◎ 2006 ◎ 2008 ◎ 2010. Here is an even number, which applies to the first formula. The method of sequential replacement is the same as above. 2002◎2004=2003, 2003◎2006 applies to the second formula = 2005.2005 ◎ 2008 =
Gothel report
It seems difficult = =. Recursive equation or solving equation? Instead of equations, numbers directly replace letters, and formulas and new mathematical definitions are used to write calculation methods.
The first question: "If a*b=5xa-0.5xb, calculate 10*6 and 6* 10" The second question "If p and q represent two numbers, define p△q=(p+q)+5 and calculate 5 △ (10 △ 650). Calculate a fork in the circle 169 13 "fourth question" For integers A and B, specify the operation' * ':a*b=axb-a-b+ 1, if (2*x)*2=0, find the value of x "What is the commutative law?
There is another question, "For any natural number A, B: If A and B are both odd and even, then one of the circles A plus B = (A+B)/2; If A and B are odd and even numbers, then one of the circles A plus b=(a+b+ 1)/ 2 to find (1): (194 plus 195) and one plus (195 plus/kloc). One plus in circle 199) (one plus 200 in circle 199) The fourth question is to find the value of x, and the third question is forgotten to write, which is one plus a cross in circle A, and B = A/Bx2+3xa-B (2) one plus one in circle 2002, and in circle 2004.