mon29ika29
mon29ika29
01-08-2014
Mathematics
contestada
Square of the complex number (i - 2)?
Respuesta :
TestUser6
TestUser6
01-08-2014
[tex] (i-2)^{2} = i^{2} -4i+4 \\ i= \sqrt{-1} \\ i^{2} =-1 \\ i^{2} -4i+4=-1-4i+4=-4i+3\\ answer: 3-4i[/tex]
Answer Link
Аноним
Аноним
01-08-2014
[tex](i-2)^2=\\--------------------\\use:(a-b)^2=a^2-2ab+b^2\\--------------------\\=i^2-2\times i\times2+2^2=-1-4i+4=3-4i\\\\\\\\i=\sqrt{-1}\Rightarrow i^2=-1[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 93+ )
Otras preguntas
Rhys and Sarah are on their bicycles and start 90 miles apart on a road,riding towards each other. Rhys is travelling at 10 mph and Sarah is travelling at20 mph
A survey indicated that 3 out of 5 doctors use brand X aspirin. If 2000 doctors were surveyed, how many used brand X?
recomandations on teenage pregnancy
what was a motivator for spanish explorations of north america
water level in a plastic pool changed by -8 gallons each hour after 6 hours,the pool contained 132 gallons.how much water was in the pool originally?
list the fractions and decimals in order from least to greatest ...0.6, 5/8, 7/12, 0.72
When constructing an inscribed polygon with a compass and straightedge, how should you start the construction? Use a protractor to measure the original circle i
what are the two main types of exact numbers?
y=ax^2-bx-12.find the value of x? when a=1,b=2,y=3 by using general formular
Light traveling though air strikes the surface of the four different materials shown. Which material reflects light but does not refract it?