equation

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . I can not solve this expression from postfix to infix. Please help me to understand in detail 5 x y - / x y + 3 ^ 7 / + 回答1: postfix to infix: 5 x y - / x y + 3 ^ 7 / + STEP 5 x y - / A) 5xy-/ = 5 (x-y)/ = (5 /

问题 I need to find the limit of an integral in a numerical way, knowing the result of that integral. What I need to solve is: As you can see, that is the incomplete beta function. I know a , b and c . And the integral limits are from 0 to x . I need to find x . 回答1: The fzero function can solve all sorts of nonlinear equations. First, calculate the incomplete beta function as a function of X (I subtracted the c because we want to find the x that makes Y=0 ): Y=@(X) beta(a,b)*betainc(X,a,b)-c or,

问题 How is opacity calculated mathematically? There is opacity value in Photoshop, CSS etc. Actually this opacity is the transparent behavior of a layer. That we all know. But how is it calculated mathematically? Is there any equation to calculate opacity? By setting opacity value what is happening there? Take the case of plain color layers: Layer 1 (Foreground Layer) and Layer 2 (background layer) Layer 1 is red (say color value A ) and Layer 2 is white (say color value B ). When we set opacity

问题 I want to write some complex mathematical equation in my web page. Is there any plugin or anything for this? 回答1: Try mathjax http://www.mathjax.org/ . I personally find it very good. 回答2: For complex equations, MathJax is the current practical solution. MathML is a more structural approach in principle, but browser support is rather limited and often of questionable quality. However, complexity is relative. To some people, E = mc ² or ∂/∂ t + v ⋅ ∇ might be complex, and such constructs can

问题 I want to write some complex mathematical equation in my web page. Is there any plugin or anything for this? 回答1: Try mathjax http://www.mathjax.org/ . I personally find it very good. 回答2: For complex equations, MathJax is the current practical solution. MathML is a more structural approach in principle, but browser support is rather limited and often of questionable quality. However, complexity is relative. To some people, E = mc ² or ∂/∂ t + v ⋅ ∇ might be complex, and such constructs can

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 6 years ago . I'm having trouble understanding the syntax of Java and how to use Java to solve math equations. Below is just an example of a simple equation. I want the program to simply be able to output the result of the

问题 I have an equation getting trouble while solving it. My equation: S1=O*P*M1/Y1 D1=N-S1 S2=(O-D1)*P*M2/Y2 D2=N-S2 S3=(O-D1-D2)*P*M3/Y3 D3=N-S3 ... What I've done: $S = array(); $M = array(30,31,30); $Y = array(360,360,360); $O = 30000; $P = 0.3; $N = 10509.74; $D = array(); for($i=1; $i<=count($M); $i++){ if($i==1){ $S[1] = $O*$P*$M[1]/$Y[1]; $D[1] = $N - $S[1]; } else{ for($k=2; $k<=count($M); $k++){ $S[$i] = ($O-$D[$k-1])*$P*$M[$k]/$Y[$k]; $D[$i] = $N - $S[$i]; } } } print_r($S); No idea

问题 I am developing a GUI application (in the civil engineering context) with python3 and QT and want to display an equation in three different ways: symbolic: sigma=N/A with values: sigma=200kN/20cm² as a result: sigma=10kN/cm² The layout of the equation and the order of symbols has to be the same for both (1) and (2), but i only want to enter the equation once in my sourcecode. I searched a lot, this is the best i could get: class myfancy_equation(): def __init__(self): self.a = Symbol('a')

问题 I am using scipy.optimize fsolve for finding roots of two equations. fsolve works well for some range of b values (0.1 to 0.6), but fails for values like 0.9 or 0.99. I have tried moving to least_squares or minimize, but get a tuple error whilst providing initial conditions. Including edits from below findings be self: from scipy.optimize import fsolve import scipy.stats as st from numpy import * import numpy as np def rod(var1, var2, mu, sigma): return (st.lognorm.ppf(var1, s = sigma, scale

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 6 years ago . Does anyone know how I can solve this problem ? any help would be great...... i cant seem to get my head around it. As you know Binary can only be either 1 or 0 Say you had a 8 digit Binary number like a byte >>>