In mathematics, a partial derivative of a function of several variables is its derivative with respect to one of those variables, with the others held constant (as opposed to the total derivative, in which all variables are allowed to vary).he cross partial derivative with respect to x and y is obtained by taking the partial derivative of f with respect to x, and then taking the partial derivative of the result with respect to y, to obtain.
Definition of a Single Nucleotide Polymorphism, SNP. A SNP is a site in the DNA where different chromosomes differ in the base they have. For example, 30 percent of the chromosomes may have an A, and 70 percent may have a G. These two forms, A and G, are called variants or alleles of that SNP.
Scientific notation (SN), also referred to as exponential notation, is a system developed to abbreviate numbers having an extreme number of digits and or decimal places. In fact, you can think of SN as a short-hand method for expressing numbers.