Pre Requisite for bootcamp, Quardratic Equation, I am stuck

Question

Just going to link the question; I have no other info to go off of; and I am very confused, Would love a solution; but also if you could explain the how and why, that would be extremely helpful TYIA PROBLEM FROM TEST

For the equation `2x^2 -x - 4 = 0` , a=2, b=-1, and c=-4. Just plug these values into the formula they provide. — user20650, Jul 01 '22 at 23:25
I'm voting to close this question because it doesn't seem to be about programming — user20650, Jul 01 '22 at 23:26

score 0 · Answer 1 · answered Jul 01 '22 at 23:19

You can make a function to solve the quadratic equation , which takes the coefficient of the equation a, b , c and return the roots

fn <- function(a , b , c){
    root1 <- (-b + sqrt(b^2 - 4*a*c)) / (2*a)
    root2 <- (-b - sqrt(b^2 - 4*a*c)) / (2*a)
    round(c(root1 , root2) , digits = 3)
}

then apply it to your question as follows

fn(2,-1,-4)

[1]  1.686 -1.186

Pre Requisite for bootcamp, Quardratic Equation, I am stuck

1 Answers1