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A- Computer Questions- Solutions and RubricExam 1

# A- Computer Questions- Solutions and RubricExam 1 -...

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Computer Question 1: Plot and Subplot You are given the following points, which are given as (x,y) coordinate pairs, with the y points in scientific notation (4e+010 means 4*10^10): (20, 1.2e+009) (25, 1.8e+011) (30, 2.7e+013) (35, 4.0e+015 (40, 5.9e+017) Write Matlab code that displays the following two graphs next to each other (using the subplot function): a) A standard x-y plot of the points b) A plot of the points where the y axis is logarithmic Title the graphs (“X-Y Plot” and “Y Logarithmic”). Also answer, in one sentence, what you learn about the relationship between x and y as a result of these plots, and suggest a possible equation for y. x = 20:5:40; y = [1.2e+009 1.8e+011 2.7e+013 4.0e+015 5.9e+017]; subplot(1,2,1); plot(x,y); title( 'X-Y Plot' ); subplot(1,2,2); semilogy(x,y); title( 'Y Logarithmic' ); You learn that y is exponentially related to x, so you might have y = e x , potentially with constants added in. -4 if they have minor syntax errors (they had the computer to check answers) -4 if they are missing titles -8 if they at least successfully use 2 of the following: subplot, plot, and colon operator -10 if they at least successfully use 1 of the following: subplot, plot, and colon operator -12 if they seem to kind of understand how to plot things -14 otherwise Computer Question 2: Leap Year Write Matlab code that does the following:

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Ask the user to input the year. First, verify that they have entered a number that
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A- Computer Questions- Solutions and RubricExam 1 -...

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