dipankar21
 Name:
 Dipankar DasGupta
 School:
 About:
 I am a teacher in Calcutta, India. Mathematics is my passion.
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dipankar21:
Group Title
Find the 5th root of 721.8
 updated 2 years ago
 1 reply
 No Medals Yet
Mathematics

dipankar21:
Group Title
If y varies as the cube root of x, and if y=3 when x=64, find the formula connecting the variables. Hence find x when y=15/4.
 updated 2 years ago
 1 reply
 No Medals Yet
Mathematics

dipankar21:
Group Title
Find the equation of the straight line that is parallel to the lines y=6 and y=2 and the midway between them.
 updated 2 years ago
 3 replies
 4 Medals
Mathematics

dipankar21:
Group Title
Solve the following equations:
(x+y)dx + xdy=0; (x+y)dx  xdy=0
 updated 2 years ago
 4 replies
 No Medals Yet
Mathematics

dipankar21:
Group Title
Find the HCF of 2x^45x^32x+1 and 4x^3+8x^2+5x+3
 updated 2 years ago
 11 replies
 2 Medals
Mathematics

dipankar21:
Group Title
Solve the equation:
16x^2+25y^2=544 (i)
xy=12 (ii)
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

dipankar21:
Group Title
The volume of a right circular cylinder tin is V=pi.r^2h and the surface area of the cylinder is A=2pi.r^2+2pi.rh, where r is the radius of …
 updated 2 years ago
 2 replies
 No Medals Yet
Mathematics

dipankar21:
Group Title
The relation between two qtys. y and x is given by the equation y=mx+c, where m and c are consts. What are m and c if x=4 gives y=2 and x=2 …
 updated 2 years ago
 3 replies
 2 Medals
Mathematics

dipankar21:
Group Title
Find the c.g. of the parabolic segment bounded by y^2=4ax and the line x=b.
 updated 2 years ago
 No Medals Yet
Mathematics

dipankar21:
Group Title
If the curve of xy=1 be rotated about the xaxis, find the volume generated by the part of the curve intercepted between x=1, x=4.
 updated 2 years ago
 1 reply
 1 Medal
Mathematics

dipankar21:
Group Title
Find the are bounded by the straight line 2y=5x+7, the xaxis and the ordinates x=2, x=5.
 updated 2 years ago
 1 reply
 1 Medal
Mathematics

dipankar21:
Group Title
The product of a number n and 2n5 is equal to 250. What should be the value of n?
 updated 2 years ago
 2 replies
 3 Medals
Mathematics

dipankar21:
Group Title
The sum of a number and its reciprocal is 2.9. What is the number?
 updated 2 years ago
 3 replies
 3 Medals
Mathematics

dipankar21:
Group Title
How to find the c.g. of a quadrant of a circle, radius r ?
 updated 2 years ago
 No Medals Yet
Mathematics

dipankar21:
Group Title
Please say, to what limits will the following series tend as the number of terms increases indefinitely:
(a) 0.1+0.001+0.000 01+...........…
 updated 2 years ago
 2 replies
 No Medals Yet
Mathematics

dipankar21:
Group Title
Please solve:
x+y=8.
xy=15.
 updated 2 years ago
 1 reply
 1 Medal
Mathematics

dipankar21:
Group Title
What is the M.I. of an elliptic lamina, axes 2a and 2b, about an axis drawn through the centre of the ellipse and perpendicular to its plane…
 updated 2 years ago
 No Medals Yet
Mathematics

dipankar21:
Group Title
The pressure in a test apparatus varies directly as the absolute temperature and inversely as volume of gas. If the temperature increases by…
 updated 2 years ago
 1 reply
 No Medals Yet
Mathematics

dipankar21:
Group Title
Find the volume of the cone formed by the rotation round the xaxis of that part of the line 2xy+1=0, intercepted between the axes...How?
 updated 2 years ago
 1 reply
 1 Medal
Mathematics

dipankar21:
Group Title
How to find the volume of the solid generated by rotation about the xaxis of the part of the curve of y=sin x, between x=0 and x=pi ?
 updated 2 years ago
 4 replies
 1 Medal
Mathematics

dipankar21:
Group Title
How to find the length of the part of the curve of y=log sec x between the values x=0 and x=pi/3 ?
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

dipankar21:
Group Title
What would be the mean value of cos x between x=0 and x=pi/4 ?
 updated 2 years ago
 1 reply
 1 Medal
Mathematics

dipankar21:
Group Title
What would be the mean value of the function sin x over the range of values x=0 to x=pi ?
 updated 2 years ago
 1 reply
 1 Medal
Mathematics

dipankar21:
Group Title
How to find the volume of the solid generated by the rotation about the xaxis of the part of the curve of y=sin x, between x=0 and x=pi ?
 updated 2 years ago
 1 reply
 1 Medal
Mathematics

dipankar21:
Group Title
What is the M.I of a uniform circular lamina of radius 'a' about an axis perpendicular to the plane of the disc through a point on the circu…
 updated 2 years ago
 No Medals Yet
Mathematics