MatLap Homework

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Programming

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Numerical and Computer Tools 1 Homework 4 1. Construct a row vector named ‘even’ containing even numbers from 2 to 34. 2. Construct a row vector named ‘threes’ containing every third number from 2 to 34. 3. Construct a row vector named ‘backward’ containing numbers starting at 22 to 5 by ones. 4. Construct a row vector ‘evens’ with even numbers from 2 to 20. Construct a row vector ‘odds’ with odd numbers from 13 to 31. Create vector ‘sumEvensOdds’ that is the sum of vectors evens and odds. Create vector ‘productEvensOdds’ that is the array product of vectors evens and odds. 5. Input a vector of radii (more than one) and a vector of heights and calculate a vector 1 containing the volume of the resulting cones. V= 3 ∗ ℎ ∗ 𝑝𝑖 ∗ 𝑟 2 Do not use the MATLAB functions or the matrix multiplication operator (*) or transpose operator ( ‘ ) for the following problem. You can use * to multiply scalars. 6. Let a and b be three-dimensional vectors that are entered from input statements. Write a MATLAB script that calculates: 1. the dot product between the two vectors; and 2. the cross product a × b. Do not use the built-in MATLAB functions. The output should be: The dot product of [xx.xx, xx.xx, xx.xx] and [xx.xx, xx.xx, xx.xx] is xx.xx. The cross product of [xx.xx, xx.xx, xx.xx] and [xx.xx, xx.xx, xx.xx] is [xx.xx, xx.xx, xx.xx]. The cross product of vectors (a1, a2, a3) and (b1, b2, b3) can be calculated as: (a2b3 – a3b2)i + (a3b1 – a1b3)j + (a1b2 – a2b1)k or [(a2b3 – a3b2), (a3b1 – a1b3), (a1b2 – a2b1)] 7. Write a function that will calculate the volume of a barbell made of two spheres connected by a bar. You will pass the radius of the spheres, the radius of the cylinder and the length of the cylinder. Write a program (script) that inputs the radius of the spheres, the radius of the cylinder and the length of the cylinder and calls the function to calculate the volume. Display the result in the script as “The volume of a barbell with two spheres of xx.x radius and a bar of length xx.x with radius of x.xx is xxx.xx.” Volume of sphere = 4/3*pi*r3 Volume of cylinder = pi*r2*height
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Anonymous
Excellent resource! Really helped me get the gist of things.

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