Description Usage Arguments Details Value Examples
View source: R/f3.rbsb4.code.r
This function returns the root (or two roots) of the equation
ky*y + kx2*x^2 + kx*x + kk = 0
. When dx
is not null, it
is supposed to give the interval where the root lies, in that case
only one root is returned.
The first parameter can be a vector of
any length and all computations are vectorized.
Only real roots
are considered.
1  solve2degree(y, ky, kx2, kx, kk, dx=NULL, x0=NULL)

y 
Vector of values for which the equation must be satisfied. 
ky 
Coefficient for 
kx2 
Coefficient for 
kx 
Coefficient for 
kk 
Constant coefficient. 
dx 

x0 

When dx
is defined only one root is returned, belonging to the
interval; if it is not possible (root(s) exist(s) and do(es) not
comply, then a fatal error is issued.
When every real number
complies with the equation, according to available arguments, the
returning value is x0
, mean(dx)
or 0
. When
is.null(dx)
either one or two roots is returned with NA
when the solution is complex.
A matrix having one or two columns according to the values of
ky,kx2,kx,kk,dx
.
1 2 3 4  rbsb3k("RESET"); # for R checking compliance (useless)
solve2degree(1:10, 1, 1, 0, 20);
solve2degree( 3, 1, 1, 1, 1);
solve2degree( 3, 1, 1, 1, 1, c(0.5, 1.5));

Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.