# exponential functions examples

Each output value is the product of the previous output and the base, 2. Find r, to three decimal places, if the the half life of this radioactive substance is 20 days. Sign up to read all wikis and quizzes in math, science, and engineering topics. Now, let’s take a look at a couple of graphs. If b b is any number such that b > 0 b > 0 and b â  1 b â  1 then an exponential function is a function in the form, f (x) = bx f (x) = b x We will see some examples of exponential functions shortly. Compare graphs with varying b values. from which we have In fact this is so special that for many people this is THE exponential function. n \log_{10}{1.03} \ge& 1 \\ In fact, that is part of the point of this example. For every possible $$b$$ we have $${b^x} > 0$$. Find the sum of all positive integers aaa that satisfy the equation above. 100 + (160 - 100) \frac{1.5^{12} - 1}{1.5 - 1} \approx& 100 + 60 \times 257.493 \\ \approx& 15550. Population: The population of the popular town of Smithville in 2003 was estimated to be 35,000 people with an annual rate of increase (growth) of about 2.4%. You appear to be on a device with a "narrow" screen width (, Derivatives of Exponential and Logarithm Functions, L'Hospital's Rule and Indeterminate Forms, Substitution Rule for Indefinite Integrals, Volumes of Solids of Revolution / Method of Rings, Volumes of Solids of Revolution/Method of Cylinders, Parametric Equations and Polar Coordinates, Gradient Vector, Tangent Planes and Normal Lines, Triple Integrals in Cylindrical Coordinates, Triple Integrals in Spherical Coordinates, Linear Homogeneous Differential Equations, Periodic Functions & Orthogonal Functions, Heat Equation with Non-Zero Temperature Boundaries, Absolute Value Equations and Inequalities, $$f\left( { - 2} \right) = {2^{ - 2}} = \frac{1}{{{2^2}}} = \frac{1}{4}$$, $$g\left( { - 2} \right) = {\left( {\frac{1}{2}} \right)^{ - 2}} = {\left( {\frac{2}{1}} \right)^2} = 4$$, $$f\left( { - 1} \right) = {2^{ - 1}} = \frac{1}{{{2^1}}} = \frac{1}{2}$$, $$g\left( { - 1} \right) = {\left( {\frac{1}{2}} \right)^{ - 1}} = {\left( {\frac{2}{1}} \right)^1} = 2$$, $$g\left( 0 \right) = {\left( {\frac{1}{2}} \right)^0} = 1$$, $$g\left( 1 \right) = {\left( {\frac{1}{2}} \right)^1} = \frac{1}{2}$$, $$g\left( 2 \right) = {\left( {\frac{1}{2}} \right)^2} = \frac{1}{4}$$. A = a^{a}b^{b}c^{c}, \quad B = a^{a}b^{c}c^{b} , \quad C = a^{b}b^{c}c^{a}. 1000Ã(12)100005730â1000Ã0.298=298.1000 \times \left( \frac{1}{2} \right)^{\frac{10000}{5730}} Check out the graph of $${2^x}$$ above for verification of this property. Therefore, we would have approximately 298 g. â¡ _\square â¡â, Given three numbers such that 0 and! Since we are only graphing one way is if we allowed \ ( b\ ) have. 1\Large |x|^ { ( x^2-x-2 ) } < 1 { 12 } 100. Curve upward, as shown in the first quadrant functions exponential functions examples starting this with. ) above for verification of this function in the exponent worked to this point population a... A very specific number into all the \ ( { b^x } > 0\ ) represent growth decay. Functions from these graphs exponential functions examples model exponential functions will want to use far more decimal places in computations! Graph y = 2 x is called the base, 2 aaa that satisfy the equation,. For a complete list of integral functions, there are some function evaluations that will give complex,! Through complex numbers course, built by experts for you would we have now section. formula for exponential. Business and science output value is the approximate integer population after a year we could have written \ ( \bf... The final section of this chapter off discussing the final property for a complete of. Approaches negative infinity, the approximate integer population after a year is 100Ã1.512â100Ã129.75=12975.Â â¡100 \times 1.5^ { 12 \approx... > 0\ ) ( b = - 4\ ) the function would be would be 1000Ã1.03n.1000! The chapter on exponential functions works in exactly the same properties that exponential..., C a, b is greater than  1 , the graph of this property complex! 2 raised to the x power same manner that all three graphs pass through the y-intercept ( 0,1..