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Trying to plot a function

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Evan Gehret
Evan Gehret 2023-12-14
评论： Dyuman Joshi 2023-12-15
I am trying to plot the following function and have the period after "theta_shock", but I am getting an error of "Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters"
theta_shock = 0:90
M = 2
g = 1.4
half_cone = atand((M^2*sind(theta_shock.)-1)/(M^2*(g+cosd(2*theta_shock.))+2))
plot(theta_shock,half_cone)
What am I doing wrong and how do I fix this?

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回答（1 个）

Sulaymon Eshkabilov
Sulaymon Eshkabilov 2023-12-14
Ran in:
Here is the fixed code:
theta_shock = 0:90;
M = 2;
g = 1.4;
half_cone = atand((M^2*sind(theta_shock)-1)./(M^2*(g+cosd(2*theta_shock))+2));
plot(theta_shock,half_cone)
  1 个评论
Dyuman Joshi
Dyuman Joshi 2023-12-15
The source of the error were the fullstops present after theta_shock
Removing them and using the element-wise division for numerator and denominator gave the correct output.

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