Can someone please help?

Answer 1

[madhan ravi]

Lines 2 , 3 and 4 should be at the end of part a

[Abdulrahman Al Ali]

[Abdulrahman Al Ali]

what should be done here?

[madhan ravi]

) at the right side is missing

[Abdulrahman Al Ali]

it worked but, now i got another problem

[madhan ravi]

upload your code

[madhan ravi]

Abdulrahman Al Ali's answer moved here for consistency:

syms ;
Qat1=subs(Qrulea,x,1);
Dat1=subs(Directa,x,1);
assert(isequal(Qat1,Dat1),
% Part a
fa= (x^2-8*x+16) ;
ga= (-3*x^2-2*x^3) ;
Qrulea= fa*diff(ga)-diff(fa)*ga/ga^2   % Use the formula above here (no semicolons so you can compare answers)
Directa= diff(fa/ga)  % Just use the diff command here
% Part b
fb= sqrt(x) ;
gb= (x^2-2*x+3) ;
Qruleb= fb*diff(gb)-diff(fb)*gb/gb^2
Directb= diff(fb/gb)

[madhan ravi]

Looks like you didn't even put anything like what I said then what's the use of me helping??

[Abdulrahman Al Ali]

sorry i uploded the wrong code

[Abdulrahman Al Ali]

syms x;

% Part a
fa= (x^2-8*x+16) ;
ga= (-3*x^2-2*x^3) ;
Qrulea= fa*diff(ga)-diff(fa)*ga/ga^2   % Use the formula above here (no semicolons so you can compare answers)
Directa= diff(fa/ga)  % Just use the diff command here
Qat1=subs(Qrulea,x,1);
Dat1=subs(Directa,x,1);
assert(isequal(Qat1,Dat1)),

% Part b
fb= sqrt(x) ;
gb= (x^2-2*x+3) ;
Qruleb= fb*diff(gb)-diff(fb)*gb/gb^2
Directb= diff(fb/gb)
Qat1=subs(Qruleb,x,1);
Dat1=subs(Directb,x,1);
assert(isequal(Qat1,Dat1)),

[madhan ravi]

Qrulea= (diff(fa)*ga-fa*diff(ga))/ga^2
        ^-----------------------^-----forgot to put parantheses DON'T FORGET ABOUT QUOTIENT RULE!!!

[Abdulrahman Al Ali]

THANK YOU VERY MUCH!!!!!!!!!!

[madhan ravi]

Anytime :)