Hi, how can i proceed with this question, everytime i plot it, it doesn't show me my line. Can u guys help me

x = -10 : 0.01 : 10;
y = (exp(x)/ sin(x)) + 0.3;
plot(x,y)

Answer 1

[Jan Studnicka]

You are missing . before /. See:

https://www.mathworks.com/help/matlab/ref/rdivide.html

https://www.mathworks.com/help/matlab/matlab_prog/array-vs-matrix-operations.html

x = -10 : 0.01 : 10;
y = (exp(x)./ sin(x)) + 0.3; % use ./ instead of /
plot(x,y)

[Roman Azrael Balgobin]

How can i differentiate this equation to find its stationary points in the x>0

Answer 2

[the cyclist]

It's because you used a matrix division instead of an element-wise division to calculate y. Try this instead:

y = (exp(x)./ sin(x)) + 0.3;

Note the use of ./ in place of just / in the formula.

See this documentation for more details.