The fractional equation: 1 / (2x + 1) = 1 / (x + n) has increasing roots, then n =? If the problem, detailed problem-solving process, thank you

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• 1. If x > 1 / 2 (x-3), 2x + 3
• 2. If the fractional equation 3xx − 1 = MX − 1 has an increasing root, then the value of M is () A. 1B. -1C. 3D. -3
• 3. When m is the value, the fractional equation 1 / X-1 + m / X-2 = 2m + 2 / x ^ 2-3x + 2 has an increasing root
• 4. If the fractional equation 3x / X-2 + 5 = 8m / X-2 has an increasing root, then M =?
• 5. When the value of K is what, solving the fractional equation 1 / (x + 2) - K / (X-2) = 1-4x / (x ^ 2-4) will produce increasing roots
• 6. The square root of a number 2m-6 and 3M + 1, what is the number? How to write the process
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• 8. Which is the function to solve the positive definite equation of coefficient matrix with square root and improved square root in MATLAB?
• 9. Second order unit matrix square root algorithm Find a second order matrix X, so that its square is equal to the second order identity matrix, please give the algorithm Note: this problem is a numerical method problem, only need algorithm ideas, do not need code, Another problem is as follows: A and B are known matrices of NxN respectively, and finding the unknown matrix of NxN such that axa-xb = I (identity matrix) is also a numerical algorithm The two questions are very similar. They are well done, It's the best way to solve the problem in MATLAB,
• 10. The arithmetic square root of 22 / 3 and 49
• 11. If the fractional equation (x-a) / (x-1) - 3 / x = 1 about X has no solution, then a =? Do I have the right solution? Here's my solution: if (a + 2) x = 3, then a = 2 has no solution, When x = 0, there is no solution When x = 1, a + 2 = 3, then a = 1 ∴ a=-2 ,1
• 12. The fractional equation 3 / X-1 / (x + 1) + (x + a) / X (x + 1) = 0 has no solution Come on, now
• 13. If the fractional equation (x-a) / (x-1) - 3 / x = 1 has no solution, then a= Double x (x-1) x(x-a)-3(x-1)=x(x-1) x²-ax-3x+3=x²-x (a+2)x=3 If a = - 2 Then a + 2 = 0 Then 0 = 3, not true, If a ≠ - 2 Then x = 3 / (a + 2), if there is no solution, then this is an increasing root That is, the common denominator is 0 x(x-1)=0 x=0,x=1 3 / (a + 2) = 0 doesn't hold. Why can't x = 0 be brought into the fractional equation? Then a is an arbitrary value!
• 14. If the fractional equation x + ax − 1 = a has no solution, then the value of a is () A. -1B. 1C. ±1D. -2
• 15. The fractional equation 3A + 1 x + 1 = a has no solution
• 16. Find the fractional equation x + (1 △ x) = 2 My solution is: X & sup2; + 1 = 2x (both sides are the same as - 2): X & sup2; - 1 = 2x-2 (factorization): (x + 1) (x-1) = 2 (x-1) (about X-1 on both sides): x + 1 = 2 The solution is x = 1 Test, bring in the original equation, X ≠ 0, but the following (x-1) is equal to 0 Now ask if x = 1 is the increasing root of this equation
• 17. Solve the following fractional equation. (1) 1x − 3 = 2 + x3 − X; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; (2) 1x + 1 + 2x − 1 = 4x2 − 1
• 18. The solution of fractional equation 5-x / x-4 + 1 / 4-x = 1 5-x and 1 are molecules, and x-4 and 4-x are denominators,
• 19. Solving the fractional equation: 3 − XX − 2-1 = 52 − x
• 20. On fractional equation If a person's speed from a to B is a and that from B to a is B, then his average speed from a to B is () (2ab)/(a+b)