ExponentialChangeExponential growth or decline of connected stock 
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ExponentialChange will fill (or drain) the connected stock from a source (or into a sink) with infinite capacity at a rate that is determined at any time as the product of the current amount in the connected stock and the fractional rate given by the real input u. By convention, a positive rate will fill the stock, while a negative rate will drain it.
isCCR = true
). If this is not case, the rate will be converted using the →ForceOfInterest converter.isCCR 
Value: true Type: Boolean Description: = true, if the factional rate given is assumed to be a continuously compounding rate else the rate will be converted 

u 
Type: RealInput Description: Input signal 

y 
Type: RealOutput Description: Rate information 


y1 
Type: RealOutput Description: Rate information 

y2 
Type: RealOutput Description: Rate information 

massPort 
Type: FlowPort Description: Inflow to or outflow from connected stock 

u 
Type: RealInput Description: Input signal 
cloud 
Type: Cloud Description: Reservoir (stock/level) with an infinite capacity 


changing 
Type: Switching Description: An exchange of matter between two stocks at an exogenous rate 

stockLevel 
Type: FlowPortSensor Description: LEvel of connected stock 

changingRate 
Type: Product_2 Description: Inputs are multiplied 

indicatedFractionalRate 
Type: PassThrough Description: Output is equal to input 

ccRate 
Type: ForceOfInterest Description: Continuously Compounding Rate 
BusinessSimulation.CausalLoop Exponential growth or decline process 

BusinessSimulation.CausalLoop Fractional rate of change is proportional to that of the influencing stock 

BusinessSimulation.Flows.Interaction Linear model of interaction between two stocks 