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David Felipe


Last seen: 3 days ago Active since 2026

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Sum of series III
What is the sum of the following sequence: Σ(2k-1)^3 for k=1...n for different n?

3 days ago

Solved


Sum of series II
What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?

3 days ago

Solved


Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?

3 days ago

Solved


Is A the inverse of B?
Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

3 days ago

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Rotate Matrix @180 degree
Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...

3 days ago

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Converts numbers into characters
Converts numbers into characters

3 days ago

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Find the max element of the array
Find the max element of the array

3 days ago

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Square root
Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.

3 days ago

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Calculate the average value of the elements in the array
Calculate the average value of the elements in the array

4 days ago

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to the 2 all elements
to the 2 all elements

4 days ago

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the average value of the elements
Calculate the average value of the elements in the array

4 days ago

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Double all elements in the array
Duplicate all elements in the array

4 days ago

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calculate the length of matrix
input 1 array, calculate the length

4 days ago

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Draw a '0' in a one matrix!

4 days ago

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Battery State of Health (SoH) Calculation
In a Battery Management System (BMS), the State of Health (SoH) of a battery is an indicator of its overall condition. It is cal...

4 days ago

Solved


Battery Charge Efficiency Calculation
In a Battery Management System (BMS), the efficiency of battery charging can be estimated using the formula: where: is the...

4 days ago

Solved


Battery Voltage Drop Estimation
In a Battery Management System (BMS), the voltage drop (V_drop) due to the load can be calculated using the formula:V_drop=I×R ...

4 days ago

Solved


Battery Discharge Time Estimation
In a Battery Management System (BMS), the estimated discharge time (T) of a battery can be calculated as: ​​ where: ​ is the ...

4 days ago

Solved


State of Charge (SoC) Estimation for a Battery
The State of Charge (SoC) of a battery represents its remaining charge as a percentage. It can be calculated using the formula: ...

10 days ago

Solved


Battery Life Estimation for a Device
A battery-powered device consumes a constant current while operating. The estimated battery life (T) can be calculated using the...

10 days ago