# Quick Answer: What Is A Decay Function?

## How do you tell if a function is growth or decay?

Exponential functions are patterns that get continuously multiplied by some number.

It’s exponential growth when the base of our exponential is bigger than 1, which means those numbers get bigger.

It’s exponential decay when the base of our exponential is in between 1 and 0 and those numbers get smaller..

## How do you explain exponential decay?

When a population or group of something is declining, and the amount that decreases is proportional to the size of the population, it’s called exponential decay. In exponential decay, the total value decreases but the proportion that leaves remains constant over time.

## How do you do growth and decay?

You can do an exponential equation without a table and going straight to the equation, Y=C(1+/- r)^T with C being the starting value, the + being for a growth problem, the – being for a decay problem, the r being the percent increase or decrease, and the T being the time.

## What is radioactive decay equation?

The law of radioactive decay describes the statistical behavior of a large number of nuclides, rather than individual ones. The decay rate equation is: N=N0e−λt N = N 0 e − λ t .

## How do you do alpha decay?

So first look at the father nucleus and list its number of protons and its atomic weight. Step 3) Now from number of neutrons subtract 2 and from number of protons subtract 2 as an alpha particle has 2 neutrons and 2 protons and in an alpha decay an alpha particle will always form in case of any any father nucleus.

## What is the decay equation?

Exponential Decay Equation. The number of decaying and remaining nuclei is proportional. to the original number: dN/dt = -λ * N. =>* N(t) = N(0) * e-λt.