For this question, my graph didn't appear anything... Can anyone help me to solve this problem??

Here's my code:

function myf(x)

for x= [-10 -7 0 2.4 5 6 10]

f= (5.*x.^3 + 15.*x.^2 + x + 10).*sin(x)

y=f^-1

x1= x - f/y

end

z=plot(x1,f)

end

Answer 1

[Sam Chak]

Hi @Muhammad Huzayl Rais

If you want to plot the function over a region , then you can try something like this.

x = linspace(-10, 10, 1001);
y = myf(x);
plot(x, y), grid on, xlabel('x'), ylabel('f(x)')

% Setup your math function
function y = myf(x)
    y = (5*x.^3 + 15*x.^2 + x + 10).*sin(x);
end

[Muhammad Huzayl Rais]

Hi, sir thanks for helping me, but I still couldn't understand this 'Use Newton's Method to find the solution to the equation below to the accuracy of 10−7. '

[Sam Chak]

Hi @Muhammad Huzayl Rais

Thought your original problem is about making the graph "appears".

Can you lookup the MATLAB code for Newton's Method (on Google) and post it here?

It makes troubleshooting your problem easy for you and me.

Just make sure you edit the Newton's code to fit your mathematical problem.