# Can I get help with loops and char function?

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Amy Joyce Valencia on 23 Oct 2021
Commented: Chunru on 23 Oct 2021
Write a script that accepts as input a number n greater than or equal to 1 and less than 8, and then uses this number to calculate the 1st, 2nd, 3rd, ..., nth derivative of the polynomial below. The output should be formatted as below (in this example, the user gave an input of 5). Hint: Use the char() function to convert any symbolic variable, expression or equation into a string.
2𝑥^9 +3𝑥^6 −8𝑥^2
n = input('Enter # of derivatives to compute (1-7): '); %prompts a value input
syms x
E = 2*x^9 + 3*x^6 - 8*x^2
diff(E, n)
This is what I have so far. I have no idea how to use the char function

Chunru on 23 Oct 2021
Edited: Chunru on 23 Oct 2021
n = 3; %input('Enter # of derivatives to compute (1-7): '); %prompts a value input
syms x
E = 2*x^9 + 3*x^6 - 8*x^2
E = for i=1:n
a = diff(E, i)
c =char(a);
disp(c)
end
a = 18*x^5 - 16*x + 18*x^8
a = 90*x^4 + 144*x^7 - 16
a = 360*x^3 + 1008*x^6
##### 2 CommentsShowHide 1 older comment
Chunru on 23 Oct 2021
See above.

R2021b

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