Extract second and third row of a mxn matrix A. Which code does that correctly? A(1:m, 2:3) A(, 2:3) A(, [2,3) A[2:3,) A(, 2-3)

Q3: Write a matlab program call matq3.m that returns the plot of the 2- D space defined by the following equation: (-xsin(x) cos (x) - 2π ≤ x < 0 x ≥ 2π Label the x-axis and y-axis and z-axis and title to the curve. y =

Java - Which of (a)–(d) is false? Multiple choice A postfix expression does not require parenthesis to specify evaluation order For every infix expression, there exists an equivalent postfix expression or every postfix expression, there exists an equivalent infix expression Evaluation of a postfix expression can be done in linear time All of the above are true

have it for I can copy and paste and please don't copy the answer from another website

Objectives Practice defining functions with parameters. Practice manipulating strings. Implement your own version of Python string methods The provided file string_functions.py defines several string functions, but does not include the code for them. Add code to implement functions that are equivalent in behavior to the corresponding built-in Python string function. Every function MUST return a value. Use loops to implement your functions. You cannot use built-in string methods, string functions, or string-operators to implement your functions. Each function is worth a maximum of 10 points. 1. cs110_upper: Takes a string as a parameter and returns it as a string in all uppercase. Hint: Use the ord () function to get the ASCI value of a character. For example, ord ('a') returns the integer 97. You will also need to use the chr (value) function that returns a string of one character whose ASCII code is the integer valus. For example, chr (97) returns the string 'a'. You cannot use the…

In python please help - Second and third class will be posted in different questions, thank you. Do not change the  function names or given starter code in the script. Each class has different requirements, read them carefully and ask questions if you need clarification.  Do not use the exec or eval functions, nor are you allowed to use regular expressions (re module).  All methods that output a string must return the string, not print it. If you are unable to complete a method, use the pass statement to avoid syntax errors.    Section 1: The Stack class This class represents the stack data structure discussed in this module. Use the implementation of the Node class to implement a stack that supports the following operations. Make sure to update the top pointer accordingly as the stack grows and shrinks. You are not allowed to use any other data structures for the purposes of manipulating elements, nor may you use the built-in stack tool from Python. Your stack must be implemented…

Overall Requirements: Use only Java features that have already been introduced in the course (e.g., loops, arrays, and functions but not objects). The functions must not mutate the argument array(s). You may assume that the array arguments to all functions are not null. All samples sent to standard audio must be between –1 and +1.   Note that it is possible that the input samples to each method may not be between –1 and +1. The functions should operate as specified.   While you should not play samples whose absolute value is greater than 1, it’s fine to manipulate such values along the way.  However, to ensure that your final sample compiles with this requirement, you may want to implement one of the private helper methods: clamp() and normalize(), and then process your final sample before sending it to standard audio. You must not add public methods to the API; however, you may add private methods (which are accessible only in the class in which they are declared). Assignment: Audio…

Implement the following function: Code should be written in python.

Consider the statements below and choose the corect option T: Mathematical functions are used to draw an image in random scan system. Il: Screen points/pixels are used to draw an image in raster scan system. Both are false I is false and II is true I is true and Il is false Both are true

In Python IDLE: How would I write a function for the problem in the attached image?