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shuxue
  • Member for 11 years, 1 month
  • Last seen more than 2 years ago
14 votes
2 answers
28k views

Solve a linear system with more variables than equations

7 votes
1 answer
125 views

determinant calculation

6 votes
3 answers
2k views

Finding inverse of a matrix

6 votes
1 answer
105 views

please check my proof and comment it

4 votes
3 answers
129 views

unknown equals constant or constant equals unknown?

3 votes
1 answer
2k views

using the same symbol for dependent variable and function?

3 votes
2 answers
4k views

Solution of a system of linear equations

3 votes
1 answer
199 views

What is a 'basic region' in calculus?

3 votes
3 answers
2k views

solve a linear system using gauss-jordan elimination method

2 votes
1 answer
385 views

$x$ is within 3 units of $c$

2 votes
2 answers
363 views

Explain in words why $0x_1+0x_2+0x_3+0x_4=8$ has no solutions

2 votes
0 answers
558 views

General solution of $ty'+2y=4t^2$

2 votes
2 answers
2k views

Equal sign or approximation sign?

2 votes
1 answer
41 views

a real number as a point

2 votes
1 answer
99 views

Is it wrong to write a linear system as below?

2 votes
2 answers
254 views

A formula for the determinant of a square matrix

2 votes
1 answer
42 views

can we interpret a sentence involving more than one 'iff' in the following way?

2 votes
1 answer
175 views

Invertible Functions

1 vote
2 answers
568 views

Definition of permutation

1 vote
1 answer
1k views

Integral Form of the Remainder of the Taylor Series

1 vote
2 answers
50 views

parallel regions

1 vote
0 answers
157 views

Handwriting of special symbol in maths [duplicate]

1 vote
2 answers
50 views

For all $x$ close to $c$

1 vote
2 answers
1k views

Double integral notation

1 vote
2 answers
2k views

Solutions of differential equations in term of definite integrals

1 vote
1 answer
524 views

Integrating factors, a missing solution

1 vote
1 answer
102 views

Notation for indefinite integrals [duplicate]

1 vote
1 answer
160 views

Limit of cosine function

0 votes
1 answer
274 views

Differential Equations: Linear or Nonlinear

0 votes
2 answers
72 views

A point can be viewed as a circle?