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Can someone tell me what are the mistakes in this code?


Can someone tell me what are the mistakes in this code?

By : HyperChill
Date : November 20 2020, 11:01 PM
should help you out
code :
a = 3(x+y)
a = 3 * (x + y)


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Mistakes with this MATLAB code

Mistakes with this MATLAB code


By : asd1355215911
Date : March 29 2020, 07:55 AM
may help you . The problem was you were missing a set of parentheses in the denominator of your iteration update.
i.e
code :
x2=x1-f1(x1)*((x1-x0)/f1(x1)-f1(x0));
 x2=x1-f1(x1)*((x1-x0)/( f1(x1)-f1(x0) ));
    function secantm1(x0,x1)

        tol=10^-6; % tolerance
        itmax=1000; % max number of iterations
        itnum=0; % iterations counter


        disp([itnum,x0,x1])
        x2=x1-f1(x1)*((x1-x0)/ ( f1(x1)-f1(x0) ));
        itnum=itnum+1;
        disp([itnum,x1,abs((x0-x1)/x0)])

        while abs((x1-x2)/x1)>tol && itnum<itmax
            x0=x1; % This was OK
            x1=x2;
            x2=x1-f1(x1)*((x1-x0)/( f1(x1)-f1(x0) ));
            itnum=itnum+1;
            disp([itnum,x1,abs((x1-x2)/x1),x2])
        end
end
 0     1     2

 1     2     1

2.0000    1.1250    0.0471    1.1780

3.0000    1.1780    0.0320    1.2156

4.0000    1.2156    0.0019    1.2134

5.0000    1.2134    0.0000    1.2134

6.0000    1.2134    0.0000    1.2134
What are the mistakes i did in the code. It is not giving any output?

What are the mistakes i did in the code. It is not giving any output?


By : user1964933
Date : March 29 2020, 07:55 AM
wish helps you You have put a ; at the end of for loops and that's the reason the body of the for loop is not being executed as expected. Effect of semicolon after 'for' loop
code :
for (i = 0; i < strlen(test) && (test[i] == '-'); i++);
for (; i < strlen(test););
for (; (i < strlen(test)) && (isdigit(test[i]) == 0); i++);
for (; (i < strlen(test)) && (isalpha(test[i]) == 0); i++);
Can anyone find any bugs or mistakes in this code?

Can anyone find any bugs or mistakes in this code?


By : Michael
Date : March 29 2020, 07:55 AM
it helps some times I have been working on this code for hours, and I still can solve it. inside the function build a forever loop (infinite while loop) and inside the loop complete the following , you must put tabulation to code at least here
code :
def adding_report(report=[]): # <-- You have errors here, defined function has nothing in it
report = [] # <-- I suggest tabulating this
if re.isdigit() is True: # Not recommended
if re.isdigit(): # Recommended, will excecute when it returns any value, except (False and None)
  break # <-- this stops loop! you won't print anything that is after it
  print(report)
  print(sum(report))
Is there a way to identify mistakes in my code

Is there a way to identify mistakes in my code


By : user3259601
Date : March 29 2020, 07:55 AM
Hope this helps I have switched to using data.table because it provides concise interface to data manipulation.
with data.table all options bellow work:
code :
library(data.table)
iris.dt <- data.table(iris)
iris.dt[Species=="setosa"]
iris.dt[Species=="setosa", ]
iris.dt[iris.dt$Species=="setosa"]
iris.dt[iris.dt$Species=="setosa", ]
what is mistakes/errors in this code c++ tell me the correction?

what is mistakes/errors in this code c++ tell me the correction?


By : Toke Christiansen
Date : November 02 2020, 07:01 PM
Any of those help createlist is a method of your Node class, but inside main() you're calling it as a function. I recommend either treating Node like a C-struct and implementing those methods as functions taking a struct like Thomas mentions, which is how your code is structured anyway, or reading a tutorial on C++ classes.
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