ExponentialEase

This type of easing function creates an animation that accelerates/decelerates using an exponential formula f(t) = [[e(at) - 1] / [e(a) - 1]]. The Exponent property is used to determine the interpolation of the animation; whereas the EasingMode property is used to accelerate and decelerate the animation of the target control.

To demonstrate this, add the following RadioButton control inside the StackPanel, which will create a decelerate exponential easing effect with the interpolation value 5:

<RadioButton GroupName="AnimationSelector" 
             Content="ExponentialEase - EaseOut" 
             Margin="4"> 
    <RadioButton.Triggers> 
        <EventTrigger RoutedEvent="RadioButton.Checked"> 
            <BeginStoryboard> 
                <Storyboard AutoReverse="True"> 
                    <DoubleAnimation  
                     Storyboard.TargetName="circle" 
            ...