no. it's still 11.305
I can't check your work, since you didn't show any.
Is this right? Is my decimal right? Please check my work
∫[0,3] 2√(1 + t^2) dt
I got 24.2984
2 answers
0
∫ 2 √ ( t² + 1 ) dt
3
2 ∫ √ ( t² + 1 ) dt = arsinh ( t ) + t √ ( t² + 1 )
since:
arsinh ( t ) = ln | √ ( t² + 1 ) + t |
then
∫ 2 √ ( t² + 1 ) dt = ln | √ ( t² + 1 ) + t | + t ∙ √ ( t² + 1 ) + C
0
∫ 2 √ ( t² + 1 ) dt = F(3) - F(0)
3
where
F(0) = ln | √ ( 0² + 1 ) + 0 | + 0 ∙ √ ( 0² + 1 ) = ln | √ ( 0 + 1 ) + 0 = ln ( √ 1 ) = ln ( 1 ) = 0
F(3) = ln | √ ( 3² + 1 ) + 3 | + 3 ∙√ ( 3² + 1 ) = ln | √ ( 9 + 1 ) + 3 | + 3 ∙ √ ( 9 + 1 ) =
= ln | 3 + √ 10 | + 3 √ 10 = ln | 3 + √ 10 | + 3 √ 10 = ln ( 6.16227766 ) + 3 ∙ 3.16227766 =
1.818446459 + 9.48683298 = 11.305279439
F(3) - F(0) = 11.305279439 - 0 = 11.305279439
_______
Remark:
This integration is very difficult to solve.
If you want in google type:
Integration online
when you see list of resus clik on:
w w w. integral-calculator.c o m
Integral Calculator • With Steps
When page be open in rectangle paste:
2 √ ( t² + 1 ) dt
set
Upper bound 3
Lower bound 0
Variable of integration: t
and click
Go!
you will see solution with steps
On this site you can practice definite and indefinite integrals.
_________________________________________________
∫ 2 √ ( t² + 1 ) dt
3
2 ∫ √ ( t² + 1 ) dt = arsinh ( t ) + t √ ( t² + 1 )
since:
arsinh ( t ) = ln | √ ( t² + 1 ) + t |
then
∫ 2 √ ( t² + 1 ) dt = ln | √ ( t² + 1 ) + t | + t ∙ √ ( t² + 1 ) + C
0
∫ 2 √ ( t² + 1 ) dt = F(3) - F(0)
3
where
F(0) = ln | √ ( 0² + 1 ) + 0 | + 0 ∙ √ ( 0² + 1 ) = ln | √ ( 0 + 1 ) + 0 = ln ( √ 1 ) = ln ( 1 ) = 0
F(3) = ln | √ ( 3² + 1 ) + 3 | + 3 ∙√ ( 3² + 1 ) = ln | √ ( 9 + 1 ) + 3 | + 3 ∙ √ ( 9 + 1 ) =
= ln | 3 + √ 10 | + 3 √ 10 = ln | 3 + √ 10 | + 3 √ 10 = ln ( 6.16227766 ) + 3 ∙ 3.16227766 =
1.818446459 + 9.48683298 = 11.305279439
F(3) - F(0) = 11.305279439 - 0 = 11.305279439
_______
Remark:
This integration is very difficult to solve.
If you want in google type:
Integration online
when you see list of resus clik on:
w w w. integral-calculator.c o m
Integral Calculator • With Steps
When page be open in rectangle paste:
2 √ ( t² + 1 ) dt
set
Upper bound 3
Lower bound 0
Variable of integration: t
and click
Go!
you will see solution with steps
On this site you can practice definite and indefinite integrals.
_________________________________________________