Question

Looking for a formula to calculate DCT/FFT frequencies when cropping a matrix/image.

score 1.3k · Answer 1 · 2026-03-25 14:22:08

1.3k

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Looking for a formula to calculate DCT/FFT frequencies when cropping a matrix/image.

Published on 25 Mar 2026 - 14:22

score 619 · Answer 2 · 2014-04-29 19:44:52

619

Views

abs(x)cos(x) in Fourier space

Published on 29 Apr 2014 - 19:44

score 120 · Answer 3 · 2014-04-30 02:32:33

120

Views

Matrix representations of linear transformation between bases

Published on 30 Apr 2014 - 2:32

score 2.5k · Answer 4 · 2014-04-30 16:10:23

2.5k

Views

Defining a Linear Transformation Given a Basis for the Domain

Published on 30 Apr 2014 - 16:10

score 58 · Answer 5 · 2014-05-01 11:05:38

58

Views

Making a change of variable to transform an equation

Published on 01 May 2014 - 11:05

score 498 · Answer 6 · 2014-05-02 21:05:43

498

Views

Meaning of entries of a transformation matrix in practical terms [Homework related]

Published on 02 May 2014 - 21:05

score 325 · Answer 7 · 2014-05-03 14:45:25

325

Views

Find linear transformation of a given matrix of linear transformation

Published on 03 May 2014 - 14:45

score 283 · Answer 8 · 2014-05-03 16:58:04

283

Views

Help determining whether a function is a linear transformation $T:M_{2,2}\rightarrow R, T(A)=|A|$

Published on 03 May 2014 - 16:58

score 1.6k · Answer 9 · 2014-05-03 19:20:45

1.6k

Views

Finding an image (Linear Transformations) $T(2,-1,1)$

Published on 03 May 2014 - 19:20

score 1.1k · Answer 10 · 2026-03-25 12:32:37

1.1k

Views

From inverse Weierstrass function to Jacobi elliptic/inverse elliptic functions?

Published on 25 Mar 2026 - 12:32

score 167 · Answer 11 · 2026-03-27 08:41:18

167

Views

Complex Variables Conformal Mapping in Complex Plane of harmonic Functions

Published on 27 Mar 2026 - 8:41

score 167 · Answer 12 · 2014-05-07 02:49:11

167

Views

The linear map $ T: \mathbb R^3{\rightarrow} \mathbb R^3$ with given matrix is a rotation about some line. Find the line.

Published on 07 May 2014 - 2:49

score 3.2k · Answer 13 · 2014-05-08 17:44:47

3.2k

Views

Using the Modulation property of the Fourier Transform

Published on 08 May 2014 - 17:44

score 419 · Answer 14 · 2014-05-09 19:13:31

419

Views

Will the image of the points inside a circle be inside the image of the circle after this transformation in the complex plane?

Published on 09 May 2014 - 19:13

score 168 · Answer 15 · 2014-05-09 21:49:32

168

Views

Variations of transformation of inversion?

Published on 09 May 2014 - 21:49

List Question

Looking for a formula to calculate DCT/FFT frequencies when cropping a matrix/image.

abs(x)cos(x) in Fourier space

Matrix representations of linear transformation between bases

Defining a Linear Transformation Given a Basis for the Domain

Making a change of variable to transform an equation

Meaning of entries of a transformation matrix in practical terms [Homework related]

Find linear transformation of a given matrix of linear transformation

Help determining whether a function is a linear transformation $T:M_{2,2}\rightarrow R, T(A)=|A|$

Finding an image (Linear Transformations) $T(2,-1,1)$

From inverse Weierstrass function to Jacobi elliptic/inverse elliptic functions?

Complex Variables Conformal Mapping in Complex Plane of harmonic Functions

The linear map $ T: \mathbb R^3{\rightarrow} \mathbb R^3$ with given matrix is a rotation about some line. Find the line.

Using the Modulation property of the Fourier Transform

Will the image of the points inside a circle be inside the image of the circle after this transformation in the complex plane?

Variations of transformation of inversion?

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