Why isn't my code working?

1 Ansicht (letzte 30 Tage)
Collin Kerr
Collin Kerr am 18 Apr. 2016
Kommentiert: James Tursa am 19 Apr. 2016
%8 to 15 meters is the range
%Velocity is 0,15,30,45,60,75,90
clc,clear
F = input('Targeted Distance = ');
V_o = input('Velocity at launch = ');
S_o = input('Elevation angle at launch = ');
a=9.81; %Its a given
b=V_o*sind(S_o) %It makes the coding a bit less confusing.
c=0; %Also a given
fprintf('The targeted distance for the launch is %d meters. \n', F)
fprintf('The velocity for the launch is %d meters per second. \n', V_o)
fprintf('The elevation angle for the launch is %d degrees. \n', S_o)
Q1=(-b-sqrt(b^2-4*a*c))/2*a;
disp(Q1)
  2 Kommentare
Collin Kerr
Collin Kerr am 18 Apr. 2016
Bearbeitet: Collin Kerr am 18 Apr. 2016
The answer is .264 I don't understand why its not working. The inputs to put in are V_o as 5 and S_o as 15. F is not important at this time.
James Tursa
James Tursa am 19 Apr. 2016
Duplicate Question.

Melden Sie sich an, um zu kommentieren.

Antworten (1)

James Tursa
James Tursa am 19 Apr. 2016
You need to enclose the denominator in parentheses:
Q1=(-b-sqrt(b^2-4*a*c))/(2*a);
The way you have it coded, since / and * have the same precedence the operations are performed left to right and MATLAB sees your current coded expression as:
Q1=((-b-sqrt(b^2-4*a*c))/2) * a;
Which is not what you wanted.

Kategorien

Mehr zu Mathematics finden Sie in Help Center und File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by