plot to find root Error: Unbalanced or unexpected parenthesis or bracket

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Ahzabuddin
Ahzabuddin le 4 Mar 2016
Modifié(e) : Walter Roberson le 4 Mar 2016
>> v0 = 20; x = 35; y0 = 2; y = 1; g = 9.81;
theta0 = linspace(0,90);
ftheta0 = tan(theta0)*x-(g/(2*v0^2*cos^2(theta0))*x^2)+y0-y;
??? ftheta0=tan(theta0)*x-(g/(2*v0^2*cos^2(theta0))*x^2)+y0-y;
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Error: Unbalanced or unexpected parenthesis or
bracket.

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Walter Roberson
Walter Roberson le 4 Mar 2016
Modifié(e) : Walter Roberson le 4 Mar 2016
MATLAB does not support the syntax cos^2(theta0) to mean the square of the cos of theta0. You need to use cos(theta0).^2

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Joachim Schlosser
Joachim Schlosser le 4 Mar 2016
MATLAB will point you exactly to where it cannot cope with the input. There is a "*" missing in 2(theta0).

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