Using TI Nspire built-in functions to program gradientВ descent This entry was posted in cryptography, TI nspire, TI Nspire CX CAS and tagged bitcoin, block chain, hash function, hexadecimal, SHA-2, SHA-256 on Apby gmgolem. In the below example, the second SHA-256 initial hash value calculation is shown (first three most significant value). Repeat with the resulting value to concatenate the answer. The calculation is very simple, take the fractional part from the value times 16, and then convert the integer part to hexadecimal.

In practice these initial values are constants, but for demonstrating how fractions are represented in hexadecimal, the calculation can be shown in TI Nspire although no built-in support is provided for hexadecimal fractions. They are hexadecimal form of the fractional part of the square roots of the first 8 prime numbers 2, 3, 5, 7, 11, 13, 17, and 19. From bitcoin and block chain calculation to digital signature, SHA-256 played a pivotal role.ДЇrom the official definition, there are 8 initial hash values in the algorithm. The SHA-256 is a cryptographic hash function with many usages. Confidence Interval for Odds Ratio calculation in TIВ Nspire This entry was posted in Excel, Linear algebra, TI Nspire CX CAS and tagged Array output function, Excel, Excel tricks, matrix, matrix multiplication, MMULT on Apby gmgolem. The answer from the function will then be populated in the selected cells, and the formula will be displayed with curly brackets enclosed, like. The trick is here, when finished typing in the function, press CTRL+SHIFT+ENTER instead of just ENTER. In this example it is also a 3Г—3 matrix.ДЄpply the MMULT() function on the upper left corner cell of the region selected. Mark the output region to use the array function. A little trick is needed for this function for returning answer in array formatВ вЂ“В by pressing CTRL+SHIFT+ENTER at the same time after inputting the function for the cells selected as output array.ДЇirst step, fill in the matrix with the elements into respective cells. Then simply do multiplication after filling in the matrix elements.Дoing so in Excel required the use of the MMULT() function. The process is intuitive and easy with the visual templates.ДЇirstly use the matrix template to define one:

In TI Nspire, matrix multiplication can be accomplished in the Calculator page.

Ti nspire matrix