How to display a polynomial?

Create a function file named Func01_p4.m which has 4 arguments: x, a, b, and c. The independent variable being x of the function below:

Y = ax^2+bx+c

Download the data04_02.txt from the course website. This file consists of 3 space-­‐delimited integers. In your main script file, store these integers into the respective variables: a, b, and c. These will be the coefficients of the 2nd degree polynomial you will be integrating. Any time you refer to @Func01_p4 make sure you use the appropriate arguments (a, b, and c).

Display the polynomial like you were writing an equation (see below):

(7)*x^2 + (1)*x + (3)

where 7, 1, and 3 are the coefficients a, b, and c respectively that you imported from the file (which are different from these coefficients).

I got the part where it asks to store the integers into respective variables, but I don't get what it means by Display the polynomial like you were writing an equation.

Answer 1

[sixwwwwww]

you can do something like this:

fprintf('(%d) * x^2 + (%d) * x + %d\n', a, b, c)

[Ish]

What goes in the %d?

[sixwwwwww]

in 1st %d value of 'a' goes, in 2nd %d value of 'b' goes and in 3rd %d value of 'c' goes For example, if you have

a = 5;
b = 10;
c = 15;

then

fprintf('(%d) * x^2 + (%d) * x + %d\n', a, b, c)

will give you output:

(5) * x^2 + (10) * x + 15

[Ish]

ok, thank you!

[Ish]

just one more question. Where did you get the "n"?

[sixwwwwww]

'\n' mean new line. so after executing fprintf command the cursor goes to next line on the command window. Fpr more infomation you can see:

http://www.mathworks.com/help/matlab/ref/fprintf.html#inputarg_formatSpec