# Dinh Le Dung

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Question

How to set up Neural network and train the data

I have a linear system: x(n+1) = Ax(n)+By(n) y(n+1) = Cx(n)+Dy(n) x(0) = -2, y(0) = 3. I also have set of 1000 point (x,y) ...

1 year ago | 0 answers | 0

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answersQuestion

How to get quiver plot with gradient color

clc clear; sys = @(~,x) [-3*x(1)+3*x(2);-2*x(1)+x(2)]; syms r j space = 1.5; [r,j] = meshgrid(-4:space:4,-4:space:4); dr =...

1 year ago | 1 answer | 0

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answerQuestion

How to draw unit normal vector?

I have done all , except for the part plot unit normal vector. Could you help we solving it, thanks a lot <3

1 year ago | 2 answers | 0

### 2

answersQuestion

How to get the discriminant for symbolic quadractice equation?

I got a quadractic equation save in f. How can i calculate d= b^2-4ac from that equation?

1 year ago | 1 answer | 0

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answerQuestion

Is this code good enough for illustrate gradient descent

This is my code for 15 iterative steps clf X = -3:0.1:3; [X,Y] = meshgrid(X); Z = 4*X.^2-4*X.*Y+2*Y.^2; surf(X,Y,Z,'FaceC...

1 year ago | 0 answers | 0

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answersQuestion

Reduce matrix to row echelon

I want to reduce a matrix contain variable m to echelon form or reduced row echelon form : A = [1,2;3,m] i.e The answer should...

2 years ago | 1 answer | 0

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answerQuestion

Draw a solid bounded by many surface

Can you guys help me sketch this solid

2 years ago | 1 answer | 0

### 1

answerQuestion

Problem with ploting exp function

I try to plot t(x,y) = (x^2 - 2y^2)*e^(x-y) in Matlab and i use the following code t=@(x,y)((x.^2-2*y.^2).*exp(x-y)); x = -1:2...

2 years ago | 2 answers | 0

### 2

answersQuestion

Reshape row vector with given number of column

I try to turn a row vector into a new vector with a given number of column: Ex: A = [1,2,3,4,5,6] , col = 3 Output would be ...

2 years ago | 1 answer | 0