How to use the constant e?

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Kenneth Gabriel
Kenneth Gabriel 2016-9-14
编辑： Stephen23 2025-4-18
So the question is given x =0.2 calculate (x^2) *e^4. I know for pi you just type pi which is just pi in the command. But how do I type e in the command window. Also how to use exponents? Do you just go (x^2) ? Do I need those brackets?
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Neliswa
Neliswa 2025-4-18
when i am using this normal e the code does not work mos, what should i do?
Stephen23
Stephen23 2025-4-18
编辑：Stephen23 2025-4-18
"when i am using this normal e the code does not work mos, what should i do?"
https://www.mathworks.com/matlabcentral/answers/302984-how-to-use-the-constant-e#answer_234664

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采纳的回答

Star Strider
Star Strider 2023-4-18
编辑：MathWorks Support Team 2023-4-18
Use the exponential function exp(y) to compute e^y. For example: 
x = 0.2;
Result = (x^2)*exp(4)
Result =
2.1839

更多回答（2 个）

Harsh
Harsh 2021-10-18
e=exp
then use bracket
i.e. e^5=exp(5) in matlab
Cai Walsh
Cai Walsh 2022-3-13
say i needed Vout = VS (1 − e^-T/RC) , how would i write this as ive tried exp(-T/R*C) but wouldt work as theres a negative
  1 个评论
Steven Lord
Steven Lord 2022-3-13
Ran in:
T = 2;
R = 5;
C = 7;
y = exp(-T/R*C)
y = 0.0608
z = exp(-14/5)
z = 0.0608
Or did you want to divide by the product of R and C?
w = exp(-T/(R*C))
w = 0.9445
q = exp(-2/35)
q = 0.9445

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