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C++ Math exp()The function computes the exponential e raised to the power given number. Suppose a number is x:
exp() = ex
SyntaxConsider a number 'x'. Syntax would be: float exp(float x); double exp(double x); long double exp(long double x); double exp(integral x); Parameterx: The value whose exponential value is to be calculated. Return valueIt returns the exponential value of type float, double or long double. If value is too large, the function returns HUGE_VAL Example 1Let's see a simple example when the value of x is positive. #include <iostream> #include<math.h> using namespace std; int main() { float x=0.2; cout<<"Value of x is : "<<x<<'\n'; cout<<"Exponential value of x is : "<<exp(x); return 0; } Output: Value of x is : 0.2 Exponential value of x is : 1.2214 In this example, exp() function calculates the exponential value of x when the value of x is positive. Example 2Let's see a simple example when the value of x is negative #include <iostream> #include<math.h> using namespace std; int main() { double x= -5.3; cout<<"Value of x is : "<<x<<'\n'; cout<<"Exponential value of x is : "<<exp(x); return 0; } Output: Value of x is : -5.3 Exponential value of x is : 0.00499159 In this example, exp() function calculates the exponential value of x when the value of x is negative.
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