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0:05:07

If a,b,c are in GP, then the equations ax2+2bx+c=0 and dx2+2ex+f=0 have a common root if....

0:06:23

The value of lim y→0 (x+y)sec(x+y)−xsecx/y

0:04:44

limx→0 1−cosx√cos2x/x2

0:04:11

If the sum of the distances of a moving point in a plane from the axes is 1 then find the locus...

0:03:27

evaluate cos (-8pi/3)

0:02:24

If cosA+cosB+cosC=0 then prove that cos3A+cos3B+cos3C=12cosAcosBcosC

0:01:52

Write the set of all real numbers which cannot be written as the quotient of two integers in the...

0:01:31

Write the set of all integers whose cube is a even integer.

0:04:29

By using the concept of slope, prove that the diagonals of a rhombus are at right angles.

0:05:35

Find the equation of the parabola whose focus is (1,−1) and whose vertex is (2,1). Also find the...

0:07:02

What is the vertex, focus, and directrix of the parabola 4y^2+12x-12y+39=0?

0:03:06

If e,e' are the eccentricities of hyperbola and its conjugate hyperbola prove that 1/e^2+1/e'^2=1

0:02:51

Chinese Language School in Hong Kong

0:02:55

Military School in Kansas, United States

0:02:51

Primary School in Cape Town, South Africa

0:01:58

Technical University in Taichung, Taiwan

0:02:22

Telecommunication School in Kathmandu, Nepal

0:02:46

Boarding School in Pokhara, Nepal

0:02:05

Kickboxing School in Khulna, Bangladesh

0:02:52

Military School in Connecticut, United States

0:01:56

Blind School in Nampula, Mozambique

0:02:51

Martial Arts School in Memphis, United States

0:02:29

Medical School in Tacoma, United States

0:02:54

Residential College in Cairo, Egypt