Message Boards Message Boards

GROUPS:

[✓] Calculate a definite integral?

Posted 5 months ago
598 Views
|
4 Replies
|
2 Total Likes
|

Why the output of a definite integral is in between braces keyWhat is the meaning of this?, it suppose to show an algebraic expression in function of the integers limits What is the meaning of this?, it suppose to show an algebraic expression in function of the integers limits

4 Replies

Works fine :)

Integrate[7/4 r^3 Cos[17/100 + (4 p)/39]^2 Cos[p/4] Cos[1/10 (33/20 + p)]^2, {r, a, b}, {p, 0, 2 Pi}, {t, 0, 2 Pi}]

(* 2730 (-(a^4/4) + b^4/4) \[Pi] (1/780 + (5 (-1 + Sqrt[5]) Cos[33/100])/
   5616 + (195 Cos[1/100] Cos[(2 \[Pi])/195])/304072 + (
   195 Cos[67/100] Cos[(37 \[Pi])/195])/494648 + Sin[1/100]/76018 + 
   1/351 Sin[33/100] - (5 Sqrt[1/2 (5 + Sqrt[5])] Sin[33/100])/
   2808 + (8 Sin[17/50])/2485 - (39 Cos[(7 \[Pi])/78] Sin[17/50])/
   9940 - (79 Sin[67/100])/123662 - (
   195 Sin[1/100] Sin[(2 \[Pi])/195])/304072 + (
   39 Cos[17/50] Sin[(7 \[Pi])/78])/9940 + (
   195 Sin[67/100] Sin[(37 \[Pi])/195])/494648) *)

Clear the Kernel and then caluculate integral:

 ClearAll["Global`*"]; Remove["Global`*"]
Posted 5 months ago

It was the kernel, thank you!

Please post code rather than an image (it is not possible to cut and paste an image).

Posted 5 months ago

I´m sorry i´m new on this.

Reply to this discussion
Community posts can be styled and formatted using the Markdown syntax.
Reply Preview
Attachments
Remove
or Discard

Group Abstract Group Abstract