时间:2019-02-05 作者:英语课 分类:麻省理工学院公开课:微分方程


英语课

  分集介绍:记得幂级数吧,如1/(1-x)=Σ(x^n)、e^x=∑(x^n/n!),考虑某种变换,让两个幂级数的系数1和1/n!分别对应于f(x)=1/(1-x)或f(x)=e^x,这很容易。其实拉普拉斯变换与这是对应的。教授用这种深入浅出的讲解,让我们了解了拉普拉斯变换的由来。然后分别计算了1、e^at、cos(at)等几种常见函数的变换,并讲解了指数位移的重要公式。大名鼎鼎的拉普拉斯变换,其实并不难。









学英语单词
-mancer
anagogics
auditory cell
back knee
blast gun
Bowlin, Mount
buy when it snows, sell when it goes
cardiechema
Caribbean Group for Cooperation in Economic Development
cerements
cog-wheel grease
completely compact operator
copocracy
cornucopia sea anchor
courtiouse
crassulaceaes
cut off circuit
daply
dendritic (accessory respiratory) organ
derrick force diagram
domestic-security
double reduction bevel spur gear
dry b.
dummy parameter concatenation
eccentric-strap
electrooptical tuning
equivalent static acceleration
farm-laborer
foh
foreanswer
galvanotaxis
gaultherase
gemel
gesnerias
get into someone's good graces
half-power beamwidth of antenna
hanging matter
in perspective
incompetently
inocubated
inoquiline
intrinsic tracer
introverts
ion-trap
isothermal remanant magnetization
kerolite (cerolite)
knee pad for horse
Kundrat's lymphosarcoma
Lacovia
lesser adjutant
make hay while the sun shines
Malloydium
master traffic count
Mediterranean class
megrahi
member of Christ
mictic
minutum
molecular coil
Monaldi's drainage
mothered
motorcycle battery
movable centre of mass for jib balance
noise control
O-type star
old-country
ombrometry
ooste
organoheterotrophs
orgoraphical rain
orientation of face
papillary tumor of palate
portention
pranab
projected income
Pyrex glass tube
Retków
ring iodination
rogers me
sabkhas
screened grading
settlement system
sidlings
simple message desk interface
sinneresses
soybean situation and outlook
spinning off
stolwijk
stovepipe hats
Streptopus ovalis
succedaneously
table-type record set
tandem trailer
trait
two-handed work
unknown pleasures
usfn
Variable Resistors
Villa-Lobos, Heitor
whc
wish-fulfilments
zimapan