Cody

# Problem 1261. Find the definite integral of various linear functions

Solution 2713797

Submitted on 20 Jul 2020
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### Test Suite

Test Status Code Input and Output
1   Fail
x = '3*x'; lower=0; upper=3; y_correct = 0; assert(isequal(myintegrate(x,lower,upper),y_correct))

Error using trapz (line 66) Point spacing must be a scalar specifying uniform spacing or a vector of x-coordinates for each data point. Error in myintegrate (line 2) y = quad(f,l,u)-trapz(f,l,u); Error in Test1 (line 4) assert(isequal(myintegrate(x,lower,upper),y_correct))

2   Fail
x = '6*x'; lower=2; upper=6; y_correct = 0; assert(isequal(myintegrate(x,lower,upper),y_correct))

Error using trapz (line 66) Point spacing must be a scalar specifying uniform spacing or a vector of x-coordinates for each data point. Error in myintegrate (line 2) y = quad(f,l,u)-trapz(f,l,u); Error in Test2 (line 4) assert(isequal(myintegrate(x,lower,upper),y_correct))

3   Fail
x = '2*x'; lower=0; upper=2; y_correct = 0; assert(isequal(myintegrate(x,lower,upper),y_correct))

Error using trapz (line 66) Point spacing must be a scalar specifying uniform spacing or a vector of x-coordinates for each data point. Error in myintegrate (line 2) y = quad(f,l,u)-trapz(f,l,u); Error in Test3 (line 4) assert(isequal(myintegrate(x,lower,upper),y_correct))

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