Newton$-$Raphson

Use the Newton$-$Raphson method to find out when $f(x)=-18$ after $7$ iterations for the function:

Use an initial guess of $x_0=0\mathrm{.}6.$

$f(x)=-1\mathrm{.}0x^2-2\mathrm{.}0x$

A$.$ Save the answer from each iteration in a vector. You must use a loop and your single line calculation must be performed by accessing the proper element in the vector and assigning the result to the proper element in the

same vector. For example, suppose you call the vector $x.$ Then the one line in the loop would be $?$