Cody

# Problem 2812. Find out DC Gain of transfer function

Solution 2351308

Submitted on 24 May 2020
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### Test Suite

Test Status Code Input and Output
1   Fail
x = '5/(s+2)'; y_correct = 2.5; assert(isequal(DC_gain(x),y_correct))

Undefined function 'str2sym' for input arguments of type 'char'. Error in DC_gain (line 2) G(s) = str2sym(x); Error in Test1 (line 3) assert(isequal(DC_gain(x),y_correct))

2   Fail
x = '5/(s+5)'; y_correct = 1; assert(isequal(DC_gain(x),y_correct))

Undefined function 'str2sym' for input arguments of type 'char'. Error in DC_gain (line 2) G(s) = str2sym(x); Error in Test2 (line 3) assert(isequal(DC_gain(x),y_correct))

3   Fail
x = '5/(2*s+5)'; y_correct = 1; assert(isequal(DC_gain(x),y_correct))

Undefined function 'str2sym' for input arguments of type 'char'. Error in DC_gain (line 2) G(s) = str2sym(x); Error in Test3 (line 3) assert(isequal(DC_gain(x),y_correct))

4   Fail
x = '10/(2*s+5)'; y_correct = 2; assert(isequal(DC_gain(x),y_correct))

Undefined function 'str2sym' for input arguments of type 'char'. Error in DC_gain (line 2) G(s) = str2sym(x); Error in Test4 (line 3) assert(isequal(DC_gain(x),y_correct))