Please solve is fastly
Answers
Answer:
I=∫
0
π/2
log(tanx+cotx)dx
⇒I=∫
0
π/2
log(
cosx
sinx
+
sinx
cosx
)dx
⇒I=∫
0
π/2
log(
sinxcosx
cos
2
x+sin
2
x
)dx
I=∫
0
π/2
log(
sinxcosx
1
)dx
I=−∫
0
π/2
log(sinxcosx)dx
I=−∫
0
π/2
(log(2sinxcosx)−logx)
2I
1
=∫
0
π/2
logsinxcosxdx
2I
1
=∫
0
π/2
(log2sinxcosxdx−log2dx)
2I
1
=∫
0
π/2
logsin2xdx−
2
π
log2
2I
1
=I
1
−
2
π
log2[from(3)]
I
1
=
2
−π
log2−(
2
−π
log2) [ from (4) ]
⇒I=πlog2=RHS
Answer:
A road train, land train or long combination vehicle (LCV) is a trucking vehicle used to move road freight more efficiently than semi-trailer trucks. It consists of two or more trailers or semi-trailers hauled by a prime mover.[1] Long combination vehicles[2] are combinations of multiple trailers on tractor trucks as compared to standard 5 axle semi trailer-trucks with one trailer.