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Write a loop that calculates 12-factorial

y <- 1 for(i in 1:12){ y <-y*(i) } print(y) ## 479001600

Show how to create a numeric vector that contains the sequence from 20 to 50 by 5.

vector <- seq(20,50,5) vector ## 20 25 30 35 40 45 50

Create the function “factorial” that takes a trio of input numbers a, b, and c and solve the quadratic equation.

The function should print as output the two solutions.

factorial <- function(a,b,c){ pos_root <- (-b+(sqrt((b^2)-4ac))) / (2a) neg_root <- (-b-(sqrt((b^2)-4ac))) / (2a) print(pos_root) print(neg_root) } factorial(1,3,-28) #[1] 4 #[1] -7