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## This value must be a function  2-Guest

## This value must be a function

I am doing an assignment on electrical engineering and differential equations, but i get a problem with "This value must be a function". I really cant see where the problem is and howto solve this. Mabye some of you can help to spot the error?

1 ACCEPTED SOLUTION

Accepted Solutions  24-Ruby V
(To:Mikkelrank)

You defined V.in:=5V as a variable, but later use V.in as a function by writing V.in(t).

Thats the reason for the error message.

You have to decide, if V.in should be constant 5V or if it should depend on time!

Of course you can have both by defining V.in(t):=5 V   🙂

2 REPLIES 2  19-Tanzanite
(To:Mikkelrank) If Vin is not DC but Vin(t) you should do convolution.  24-Ruby V
(To:Mikkelrank)

You defined V.in:=5V as a variable, but later use V.in as a function by writing V.in(t).

Thats the reason for the error message.

You have to decide, if V.in should be constant 5V or if it should depend on time!

Of course you can have both by defining V.in(t):=5 V   🙂 