ChrisR - MATLAB Cody - MATLAB Central

ChrisR

2

2

Rank

100

100

Badges

53028

53028

Score

View Community Profile

51 – 100 of 292

Problem 59658. Update course numbers and abbreviations

Created by: ChrisR

Tags strings

8

Solvers

20

Size

8

Solvers

20

Size

Problem 59586. List ways to make a sum in Killer Sudoku

Created by: ChrisR

Tags puzzle, partition

3

Solvers

40

Size

3

Solvers

40

Size

Problem 59571. Compute a sum involving the zeta function

Created by: ChrisR

Tags sum, special functions, maths 505

4

Solvers

15

Size

4

Solvers

15

Size

Problem 59541. Compute the polylogarithm for real arguments

Created by: ChrisR

Tags integral, special functions, gamma

2

Solvers

128

Size

2

Solvers

128

Size

Problem 59526. Count paths between corners of a grid that remain on or below the diagonal

Created by: ChrisR

Tags sequence, lattice

3

Solvers

207

Size

3

Solvers

207

Size

Problem 59521. Integrate a power tower

Created by: ChrisR

Tags integral, special functions, maths 505

4

Solvers

38

Size

4

Solvers

38

Size

Problem 59516. Determine aquifer properties: slug test

Created by: ChrisR

Tags fit, groundwater

2

Solvers

149

Size

2

Solvers

149

Size

Problem 59511. Count the ones in a divisibility matrix

Created by: ChrisR

Tags sum, divisor, redheffer

3

Solvers

21

Size

3

Solvers

21

Size

Problem 59506. Compute the determinant of a divisibility matrix

Created by: ChrisR

Tags determinant, mobius, redheffer

4

Solvers

64

Size

4

Solvers

64

Size

Problem 59501. Compute the sum of distances from a point to the sides of an equilateral triangle

Created by: ChrisR

Tags geometry, trigonometry, hypot

6

Solvers

21

Size

6

Solvers

21

Size

Problem 59249. Compute the total length of lines between all vertices of a regular polygon

Created by: ChrisR

Tags geometry, trigonometry, dr. barker

6

Solvers

20

Size

6

Solvers

20

Size

Problem 59242. Construct numbers from antidiagonals of stacks of binary numbers

Created by: ChrisR

Tags diag, fliplr, sequence

5

Solvers

25

Size

5

Solvers

25

Size

Problem 59217. List lunar triangular numbers without duplication

Created by: ChrisR

Tags strings, sequence, lunar arithmetic

4

Solvers

32

Size

4

Solvers

32

Size

Problem 59170. Determine whether a number is a Zeisel number

Created by: ChrisR

Tags primes, sequence, recurrence

7

Solvers

71

Size

7

Solvers

71

Size

Problem 59152. Determine aquifer properties: steady pump test in confined or unconfined aquifers

Created by: ChrisR

Tags curve fitting, groundwater, C E 473/573

1

Solver

99

Size

1

Solver

99

Size

Problem 59147. Determine aquifer properties: steady pump test in a leaky confined aquifer

Created by: ChrisR

Tags special functions, groundwater, fzero

1

Solver

104

Size

1

Solver

104

Size

Problem 59126. Compute the bubble popper fidget spinner sequence

Created by: ChrisR

Tags binary, sequence, modulo

5

Solvers

35

Size

5

Solvers

35

Size

Problem 59109. Check a scheme to dewater a construction area

Created by: ChrisR

Tags groundwater, superposition, C E 473/573

1

Solver

204

Size

1

Solver

204

Size

Problem 59104. Design a capture zone

Created by: ChrisR

Tags surface area, groundwater, C E 473/573

3

Solvers

38

Size

3

Solvers

38

Size

Problem 59050. Determine whether a number is a Higgs prime

Created by: ChrisR

Tags primes, sequence, subset

5

Solvers

55

Size

5

Solvers

55

Size

Problem 59034. Compute the maximum length of a contaminant plume in groundwater

Created by: ChrisR

Tags groundwater, ordinary differential equation, hydrology

2

Solvers

148

Size

2

Solvers

148

Size

Problem 59029. Compute the water table in a layered unconfined aquifer

Created by: ChrisR

Tags integration, ordinary differential equation, darcys law

2

Solvers

101

Size

2

Solvers

101

Size

Problem 59007. Compute head profiles for steady 1D flow through soils in series

Created by: ChrisR

Tags groundwater, darcys law, C E 473/573

1

Solver

103

Size

1

Solver

103

Size

Problem 59002. Compute piezometric head in a leaky confined aquifer

Created by: ChrisR

Tags groundwater, ordinary differential equation, C E 473/573

3

Solvers

116

Size

3

Solvers

116

Size

Problem 58997. Compute the water table elevation in an unconfined aquifer with recharge

Created by: ChrisR

Tags integration, groundwater, ordinary differential equation

4

Solvers

78

Size

4

Solvers

78

Size

Problem 58977. Find the smallest number leading to a maximal product of two numbers that concatenate to another number

Created by: ChrisR

Tags strings, sequence, noeis

5

Solvers

98

Size

5

Solvers

98

Size

Problem 58971. Compute the maximal product of any two numbers whose concatenation is n

Created by: ChrisR

Tags strings, sequence

8

Solvers

26

Size

8

Solvers

26

Size

Problem 58966. Compute the head for steady 1D flow in a homogeneous aquifer

Created by: ChrisR

Tags groundwater, ordinary differential equation, hydrology

4

Solvers

199

Size

4

Solvers

199

Size

Problem 58956. Find the nine-point circle of a triangle

Created by: ChrisR

Tags geometry, triangle, circle

3

Solvers

232

Size

3

Solvers

232

Size

Problem 58946. Count block fountains

Created by: ChrisR

Tags combinatorics, recursion, michael penn

6

Solvers

25

Size

6

Solvers

25

Size

Problem 58941. Compute measurement uncertainty

Created by: ChrisR

Tags derivatives, groundwater, C E 473/573

7

Solvers

51

Size

7

Solvers

51

Size

Problem 58778. Count collisions in an idealized block system

Created by: ChrisR

Tags geometry, pi, physics

6

Solvers

25

Size

6

Solvers

25

Size

Problem 58548. Find the altitudes of a triangle

Created by: ChrisR

Tags geometry, triangle

5

Solvers

116

Size

5

Solvers

116

Size

Problem 58498. Compute the Sisyphus sequence

Created by: ChrisR

Tags primes, sequence, mythology

6

Solvers

100

Size

6

Solvers

100

Size

Problem 58394. Integrate a product of gamma functions

Created by: ChrisR

Tags integration, special functions, maths 505

5

Solvers

13

Size

5

Solvers

13

Size

Problem 58379. Determine whether a number is prome

Created by: ChrisR

Tags number theory, sequence, dudley

8

Solvers

33

Size

8

Solvers

33

Size

Problem 58374. Classify water surface profiles

Created by: ChrisR

Tags hydrology, c e 372, hydraulics

4

Solvers

241

Size

4

Solvers

241

Size

Problem 58359. List numbers that cannot be expressed as the sum of fewer than four squares

Created by: ChrisR

Tags number theory, sequence, partitions

4

Solvers

47

Size

4

Solvers

47

Size

Problem 58354. Find the circle inscribed in a triangle

Created by: ChrisR

Tags geometry, triangle, circle

8

Solvers

38

Size

8

Solvers

38

Size

Problem 58324. Compute the critical depth of a channel

Created by: ChrisR

Tags hydrology, c e 372, hydraulics

5

Solvers

151

Size

5

Solvers

151

Size

Problem 58314. Compute the normal depth of a channel

Created by: ChrisR

Tags geometry, hydrology, c e 372

5

Solvers

161

Size

5

Solvers

161

Size

Problem 58309. Decode a message encrypted with the square root of 2

Created by: ChrisR

Tags encryption, special numbers, eulogy

3

Solvers

33

Size

3

Solvers

33

Size

Problem 58299. Encrypt a message with the square root of 2

Created by: ChrisR

Tags encryption, special numbers, eulogy

3

Solvers

60

Size

3

Solvers

60

Size

Problem 58019. Factor a number into Fermi-Dirac primes

Created by: ChrisR

Tags primes, number theory

8

Solvers

36

Size

8

Solvers

36

Size

Problem 58018. List the Fermi-Dirac primes

Created by: ChrisR

Tags primes, number theory

11

Solvers

23

Size

11

Solvers

23

Size

Problem 58013. Find a number m such that 2m and the square of m have the same digit sum

Created by: ChrisR

Tags sequence, digit sum

6

Solvers

53

Size

6

Solvers

53

Size

Problem 57988. Determine the minimum number of swaps to sort a vector

Created by: ChrisR

Tags sorting, greedy

4

Solvers

26

Size

4

Solvers

26

Size

Problem 57969. Compute flow in a partially full pipe

Created by: ChrisR

Tags trigonometry, c e 372, hydraulics

5

Solvers

51

Size

5

Solvers

51

Size

Problem 57879. Route a hydrograph through a river section with the Muskingum method

Created by: ChrisR

Tags interpolation, hydrology, c e 372

2

Solvers

213

Size

2

Solvers

213

Size

Problem 57869. Identify de Polignac numbers

Created by: ChrisR

Tags primes, number theory, sequence

19

Solvers

21

Size

19

Solvers

21

Size

51 – 100 of 292