let f(λ) =∫_(−∞) ^(+∞) ((sin( λe^x +e^(−x) ))/(x^2 +λ^2 ))dx with λ≥0
1) detdrmine a explicit form of f(λ)
2) calculate f^′ (λ) at form ofintergral and find
its value.
Master comes after Chess disappeared.
Boyka comes after Master disappeared.
BK comes after Boyka disappeared.
What comes after BK disappeared?
1. A−Team
2. Girlka
3. Bezirksschornsteinfegermeister
4. none from above
[A question from NMO 2019 in Madagascar]
ABC is any triangle.
C′ . B′ .A′ are respectively middles
of [AB] . [AC] and [BC].
we suppose that
AB=c AC=b BC=a.
1) u^(→ ) =a^2 BC^→ +b^(2 ) C^→ A+c^2 AB^→ is a vector
Demonstrate that u^→ =(a^2 −b^2 )AC^→ +(c^2 −a^2 )AB^→ .
i have done it.
2)Deduct that u^→ is not a null vector.
old activity shown in my
recent activity page, ssems
like someone is hindering
me from being able to see the
recent activity page, i reinstalled
the app, problem remains..
Two bell A and B rings in different
time interval. Bell A rings in the
interval of 8minutes while Bell B rings
in the interval of 9minutes. If the two
bell rings together for the first time
when the time is 10:00am
(a) At what time will the two bell ring
together again.
(b) State and explain two process you
will use to help SHS student to solve
the problem.