Andr's profile - activity

How set and especially clear bits? I try n.set_bit(7) No set_bit, clear_bit methods for n. Next I try clear by bit ma

How it configure with Mint?

Is posssible debugging? How to use files? I think, Sage is Python language (although has operator ^ , Python has only **

Error in Sage? Integer object is not callable I call p = random_prime(5000000, True, 4000000) print(factor(p-1)) by

Qudratic Lagrange interpolation Lagrange quadratic polynomials are described in http://mathonline.wikidot.com/quadratic-

Qudratic Lagrange interpolation Lagrange quadratic polynomials are described in http://mathonline.wikidot.com/quadratic-

How to find parameter functions ? Is given y = f(x). How to find x = fx(u) and y = fy(u) where u is uniform by length of

How to find parameter functions ? Is given y = f(x). How to find x = fx(u) and y = fy(u) where u is uniform by length of

Sagitta to arc angle start and span In c++ with Qt we have QPainterPath path; path.moveTo(startX, startY); path.arcTo(x

Goal: create testusite with correct solutions: I have samples.sage: eq0a =1.754223168770020-1.189676139503717*x-0.90831

Version 9.5 has good plot3d. Is one problem: sudo make install took long time and mainly generate documentation but not

Version 9.5 has good plot3d. Is one problem: sudo make install took long time and mainly generate documentation but not

Version 9.5 has good plot3d. Is one problem: sudo make install took long time and mainly generate documentation but not

Version 9.5 has good plot3d. Is one problem: sudo make install took long time and mainly generate documentation but not

Version 9.5 has good plot3d. Is one problem: sudo make install took long time and mainly generate documentation but not

Batch processing So far I have used sagemath one command at once. I need solve hundreds of equations, with coefficients

this answer do delete

-- post to delete,

small typo

Batch processing So far I have used sagemath one command at once. I need solve hundreds of equations, with coefficients

Batch processing So far I have used sagemath one command at one. I need solve hundreds of equations, with coefficients f

I found sequence: var('x y') eq1 = 2*x^2 + x*y +x == 6 eq2 = 3*x^2 + 2*y^2- y == 6 solutions = solve([eq1, eq2], x, y)

Finding roots polynomial 2D I have polynomial 2D degree 2 $(1,x,y,xy,x^2,y^2) $ defined on triangle. How to find all roo

exp of quaternion I try Q.<i,j,k> = QuaternionAlgebra(SR, -1, -1) exp(x+i*x+j*x+k*x) I get TypeError: can

exp of quaternion I try Q.<i,j,k> = QuaternionAlgebra(SR, -1, -1) exp(x+i*x+j*x+k*x) I get TypeError: can

Version 9.5 has good plot3d. Is one problem: sudo make install took long time and mainly generate documentation but not

SageMath version 9.4, Release Date: 2021-08-22 installed by dnf, Firefox 98.0.2. Similat in Chromium. Version 9.4 is las

SageMath version 9.4, Release Date: 2021-08-22 installed by dnf, Firefox 98.0.2

Plot3d nort works I call x, y = var('x y') plot3d(sin(pi*((x)^2+(y)^2))/2,(x,-1,1),(y,-1,1), frame=False, color='purple

Plot3d nort works I call x, y = var('x y') plot3d(sin(pi*((x)^2+(y)^2))/2,(x,-1,1),(y,-1,1), frame=False, color='purple

Twodimensional DFT About one dimensional DFT is https://doc.sagemath.org/html/en/reference/calculus/sage/calculus/transf

age: derivative(abs(xn-a*N/(1-exp(-i*2*pi*k/N)))^2,a) ....: ....: ....: 8*(xn + 8*a/(e^(-1/4*I*pi*k) - 1))/(e^(1/4*I*

derivative(abs(xn-aN/(1-exp(-i2pik/N)))^2,a) 8(xn + 8a/(e^(-1/4Ipik) - 1))/(e^(1/4Ipik) - 1) + 8(8a/(e^(1/4I

derivative(abs(xn-aN/(1-exp(-i2pik/N)))^2,a) => 8(xn + 8a/(e^(-1/4Ipik) - 1))/(e^(1/4Ipik) - 1) + 8(8

derivative(abs(xn-aN/(1-exp(-i2pik/N)))^2,a) => 8*(xn + 8*a/(e^(-1/4*I*pi*k) - 1))/(e^(1/4*I*pi*k) - 1) + 8*

derivative(abs(xn-aN/(1-exp(-i2pik/N)))^2,a) => 8*(xn + 8*a/(e^(-1/4*I*pi*k) - 1))/(e^(1/4*I*pi*k) - 1) + 8*(8*a/(e^

derivative(abs(xn-aN/(1-exp(-i2pik/N)))^2,a) => 8*(xn + 8*a/(e^(-1/4*I*pi*k) - 1))/(e^(1/4*I*pi*k) - 1) + 8*(8*a/(e^

derivative(abs(xn-aN/(1-exp(-i2pik/N)))^2,a) => 8(xn + 8a/(e^(-1/4Ipik) - 1))/(e^(1/4Ipik) - 1) + 8(8a/(e^(1/4Ipik)

derivative(abs(xn-aN/(1-exp(-i2pik/N)))^2,a)

How derive minimization frequencies formula ? Fourier DFT transformation of sawtooth wave (0, a, 2 a, 3a..a*(N-1).) has

How derive minimization frequencies formula ? Fourier DFT transformation of sawtooth wave (0, a, 2 a, 3a..a*(N-1).) has

How to expand e^(jx) I want express $e^{jx}$ in trigonometric form

How to expand e^(jx) I want express $e^{jx}$ in trigonometric form

I use

r = 1.1
r.eint().n(digits=10)

output 2.167378280

But

plot(x.eint(), x, [-1,1],frame=True)

causes error: AttributeError: 'sage.symbolic.expression.Expression' object has no attribute 'eint'

How can I plot also functions defined as methods?

what is ff? if I replace ff by f, I get empty plot. verbose 0 (3835: plot.py, generate_plot_points) Last error message: 'unsupported operand parent(s) for *: 'Real ball field with 1000 bits of precision' and 'Real Field with 84 bits of precision''