Discrete Mathematics
What is the answer to the question If 5n+6 is odd then n is odd
using the contraposition/contrapositive.
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Unanswered Posts
Need this badly today
17. At what speed must a 1000kg car approach a ramp which has a slope and 12m high at the top such that it will just coast to the top. Assume the constant retarding force due to friction, wind, etc. to be 60kg.
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normal stresses
patulong po sa sistuation 1, papaano po yung gagawin sa wind pressure (KPa)
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Normal shock wave
1. Consider a NSW with a downstream-upstream temperature ratio of 3.5 what is the mach number upstream and downstream of the shock? Show your solution.
2. The flow just upstream of a NSW is at SSLC and the mach number downstream is 0.6152 determine the pressure, temperature, density, velocity, and the total pressure and temperature. Show your solution
3. The mach number behind of a NSW is 0.4752
What is the mach number in front of the wave and the pressure ratio across the shock? Show your solution.
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DE: $(x²+4) y' + 3 xy = x$
(x²+4) y' + 3 xy = x
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differential operator please solve this problem
1. (2xD2 + 1)(3xD + 2)
2. (xD − x)(xD2 − 2)
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The Intuition Behind Integration by Parts (Proof & Example)
Many students simply memorize the Integration by Parts formula: ∫ u dv = uv - ∫ v du, but understanding where it comes from makes it much easier to remember and apply during exams.
1. The Intuitive Proof (Reverse Product Rule)
The entire concept is actually just the Product Rule for differentiation in reverse.
From the product rule for two differentiable functions, u and v: (uv)' = u'v + uv'
solution needed
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DE
xy' = y + 2 √xy
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Need this badly today
turbine is rotating at a constant speed of 2,400rev/min. at what constant rate, in radians/s2, must its motion be retarted to bring it to rest;
a. In 20 mins.
b. In 300 revolutions
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Recent comments
is it not…