3. Let a be a constant. Solve the equation$$ ( x - a ) ( x - a - 1 ) = x - a $$. 相关知识点: 试题来源: 解析 (x -a)(x-a-1)=x-a(x -a)(x-a-1)-(x-a)=0(x-a)(x-a-1-1)=0(x-a)(x-a-2)=0x=a or x=a+2x=a or x=a+2 ...
how to find constant value for a equation J= 2/(1+2Kt) ? i have a series value of J and t. how do i find constant K? J= 11.07,12.41,12.41,12.66,12.85,12.60,12.60,12.66 t= 5, 10, 15, 20, 25, 30, 35, 40 댓글 수: 0 ...
let k be a constant,if A and B are the roots of the equation x2 - 3x +k = 0,the A2 + 3B = ?k 是恒数,如果A和B是x 2- 3x+ k= 0的根,A2 + 3B = ? 相关知识点: 试题来源: 解析 因为A和B是x 2 - 3x+ k= 0的两个根,所以A+B=3,即B=3-A将B带入A2 + 3B 原式转化为...
Marcus equationIntrinsic barrierReaction of Lewis acids with Lewis basesInverted regionZhu equationThe fundamental errors of Marcus equation have been discovered for more than 6 years and many literatures on the fundamental errors of Marcus equation have been published, but till now many people have ...
where q is a constant. are a +2B and 2 a + B. Find the values of p and q.(ii) Hence form the quadratic equation whose roots are a3 and B3. 相关知识点: 试题来源: 解析 (1) 2x^2+px-8=0 (ii)3+3=(d)(a2-a2) +P=-,dp=-4 =(dhp)[(a+P)2-30] 4x^2-2xx+q=0 =...
Use the given information to find the constant of proportionality. (1)y is directly proportional to x. If x = 6, then y = 42. (2)M varies directly as x and inversely as y. If x = 2 and y =6, then M = 5. (3)W is inversely proportional to the square of r. If r = 6,...
An effective method for solving a partial differential equation of secondary hydrocarbon migration is put forward. 本文给出了一种高效率求解油气二次运移偏微分方程的方法. 来自期刊摘选 19. Multielement function calculus, infinite series , ordinary differential equation, partial derivatives, multiple integrals...
Looking for a generalization of TheoremAfor function classes, the following question arises. SupposeVis a finite dimensional translation invariant linear subspace of the given algebra{{\mathcal {A}}}. We know that every element ofVis of the form\sum _{i=1}^kp_i \cdot m_i, wherep_1 ,\...
解析 Solution: Let the roots beand. From Vieta's formulas,From (3),. Using this on (1) and (2) yieldsand. By solving each equation forand equating the result ing expressions, we get. This is equivalent to. Since, and the second factor has negative discriminant, we only have. ...
In this paper, by using the undetermined coefficient method, a simple and convenient solution for special integral of inhomogeneous linear differential equation with constant coefficients was introduced. It can be extended from the second to the n-th order. 关键词: method of undetermined coefficient ...