MATLAB: Can someone help me with this assignment

help_me

i'm using MatLab grader

Best Answer

fa=@(x) (2.*x.^3+3.*x.^2-6.*x+19)./(7.*x.^3-20.*x-5);  % define the function for part (a)-REMEMBER to use element-by-element operations (.*  ./  .^)
x=[-10 -100 -1000 -10000 -100000 -1000000 -10000000]; % define the vector x
ya=fa(x)  % calculate f(x) (No semicolon to see output)
syms x; % DO NOT CHANGE CODE ON THIS LINE
aLimit=limit((2.*x.^3+3.*x.^2-6.*x+19)./(7.*x.^3-20.*x-5),x,-inf )  % No semicolon
% Repeat the above process for part (b)
fb=@(x) sqrt(4.*x.^2+7.*x+1)-2.*x; 
x=[10 100 1000 10000 100000 1000000 10000000];
yb=fb(x) 
syms x;
bLimit=limit(  sqrt(4.*x.^2+7.*x+1)-2.*x,x,inf)
command window:
>> COMMUNITY
ya =
    0.2382    0.2814    0.2853    0.2857    0.2857    0.2857    0.2857
 
aLimit =
 
2/7
 
yb =
    1.7025    1.7449    1.7495    1.7499    1.7500    1.7500    1.7500
 
bLimit =
 
7/4
 
>>
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