section $1$: array basics

$1)$ initialize and access array elements $(5$ points$)$

$-$ Define a $1$d array $($row vector$)$ A with values from $1$ to $10$

$-$ access and display the $3$rd$,5$th$,$ and last element in the array.

$2)$ array modification $(5$ points$)$

$-$ change the value of the $5$th element in A to $20.$

$-$ display the modified array

section $2$: array operations

$1)$ elementwise operations $(10$ points$)$

$-$ create a $1$d array $($column vector$)$ B with values $2$ to $20$ in increments of $2$

$-$ compute the sum of the transpose of A and B and store it in a new array C

$-$ compute the elementwise product of transpose of array A and B and store it in D

$-$ display arrays C and D$.$

$2)$ logical operations $(10$ points$)$

$-$ Create a $1$d array $($row vector$)$ of length $10$ E with the integer values:

$9981478205$

$-$ use a logical condition to identify the elements in E that are greater

than $5$ and store the result in an array named greater$\_$than$\_5$

$-$ count how many elements meet this condition and store the result in n$\_$elements

$-$ display the result n$\_$elements

section $3$: $2$D arrays $($matrices$)$

$1)$ matrix initialization and access $(10$ points$)$

$-$ define a $3$x$3$ matrix F with values from $1$ to $9(123$ in the top row, $4$

$67$ in the second row and $789$ in the third row$)$

$-$ access and display the element in the second row, third column

$-$ Change the element in the third row, first column to $10$ and display the updated matrix.

$2)$ matrix operations $(10$ points$)$

$-$ define another $3$x$3$ matrix G with values $[9,8,7$; $6,5,4$; $3,2,1].$

$-$ calculate the matrix sum of F and G and store it in sum$\_$matrix

$-$ calculate the product $($elementwise$)$ of F and G and store it in

prod$\_$matrix

$-$ display the resulting matrices $($sum$\_$matrix and prod$\_$matrix$)$

Section $4$: array slicing and concatenation

$1)$ array slicing $(5$ points$)$

$-$ define a $1$d array H with values from $1$ to $100$

$-$ create a new array H$\_$subset that extracts every $5$th element from H

$-$ display H$\_$subset

$2)$ array concatenation $(10$ points$)$

$-$ define two $1$d arrays $($row vectors$)$ I$1$ with values from $1$ to $5,$ and I$2$ with values from $6$ to $10$

$-$ concatenate I$1$ and I$2$ along rows $($horizontally$)$ to form a new array I$\_$combined$\_$h

$-$ concatenate I$1$ and I$2($vertically$)$ to form a new $2$d array I$\_$combined$\_$v

$-$ display the horizontally concatenated array I$\_$combined$\_$h

$-$ display the vertically concatenated array I$\_$combined$\_$v

section $5$: comprehensive task

$1)$ temperature conversion $(10$ points$)$

$-$ create an array temps$\_$c with temperatures in degrees celsius $[0,20,35,40,60,100].$

$-$ convert each element in temps$\_$c to fahrenheit and store the results in an array temps$\_$f

note: conversion from celsius to fahrenheit: Fahrenheit $=$

Celsius$*9/5+32$

$-$ Display both arrays side by side in a two$-$column format $($hint$,$ vector

concatenation$)$

$2)$ array manipulation $(10$ points$)$

$-$ define a $2$d array J as reshape$(1$:$20,[4,5]).$

$-$ manually flip the matrix J horizontally by reordering the columns and

store the result in J$\_$flip

column n should become column $1$

column n$-1$ should become column $2$

$-$ transpose the manually flipped matrix

$-$ display the matrices J$,$ J$\_$flip and J$\_$final

MATLAB Code