There are two basic types of herbicide that can be used on dandelions. The first is a selective broadleaf herbicide. A broadleaf herbicide will only kill broadleaf weeds, such as dandelions. A broadleaf herbicide is good for killing dandelions in lawns, as the herbicide will kill the dandelions and not the grass.Advertisement. The other kind of effective dandelion herbicide is a non-selective herbicide. Non-selective means that the herbicide will kill any plant that it comes in contact with.here are two basic types of herbicide that can be used on dandelions. The first is a selective broadleaf herbicide. A broadleaf herbicide will only kill broadleaf weeds, such as dandelions. A broadleaf herbicide is good for killing dandelions in lawns, as the herbicide will kill the dandelions and not the grass.
What is a Function? Definition. A function is a rule which relates the values of one variable quantity to the values of another variable quantity, and does so in such a way that the value of the second variable quantity is uniquely determined by (i.e. is a function of) the value of the first variable quantity.
An equivalent definition: A function (f) is a relation from a set A to a set B (denoted f: A B), such that for each element in the domain of A (Dom(A)), the f-relative set of A (f(A)) contains exactly one element. Some common functions (with discussions). 1  trig functions. 2  sine, sin(x).