Write MATLAB codes to plot the 𝑓(𝑡)= 3𝑡2 +2𝑡−0.5 and g(t)=2*t*cos(t) where the variable t changes from 0 to 10 with step 0.5.

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

 1. [30 Points] Write MATLAB codes to plot the 𝑓(𝑡)= 3𝑡2 +2𝑡−0.5 and g(t)=2*t*cos(t) where the variable t changes from 0 to 10 with step 0.5. Plot two lines on the same figure. Add a label on the x-axis, a label on the y-axis, a title, and a grid. Also, change the color of the lines. (Hint: you can calculate power operation by ^, and do element-wise operation). You should obtain a figure like in the following;

 2. [30 Points] Write a MATLAB code to create a variable that stores a number and ask the user to enter a number, then check the number is less than, greater than or equal to your number. According to the condition, display a message on-screen (like in example below) (Hint: use if elseif statement)

 Sample screen (red ones entered by the user)

 Enter number: 34

 Your number is bigger than my number

 3. [40 Points] Write a MATLAB code to ask the user to enter a number for the angle, a number to choose the trigonometric functions Sin, Cos and Tangent. According to the user selection, calculate the result of function and display on screen (Hint: Use switch statement).

 Sample screen (red ones entered by the user)

 Enter angle in degrees: 60

 Enter a number to choose function (1: Sin, 2: Cos, 3: tangent): 2 0.5000

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