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Published on: 13/05/2022
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Questions + Answers key
Take MCQ Maths Test1.
If \(g(x, y)=3 x^{2}-5 y+2 y^{2}, x(t)=e^{t}\) and y(t) = cos t, then \(\frac{dg}{dt}\) is equal to
6e2t + 5 sin t - 4 cos t sin t
6e2t- 5 sin t + 4 cos t sin t
3e2t+ 5 sin t + 4 cos t sin t
3e2t - 5 sin t + 4 cos t sin t
2.
The change in the surface area S = 6x2 of a cube when the edge length varies from xo to xo+ dx is
12 xo+dx
12xo dx
6xo dx
6xo+ dx
3.
If we measure the side of a cube to be 4 cm with an error of 0.1 cm, then the error in our calculation of the volume is
0.4 cu.cm
0.45 cu.cm
2 cu.cm
4.8 cu.cm
4.
The percentage error of fifth root of 31 is approximately how many times the percentage error in 31?
\(\frac{1}{31}\)
\(\frac15\)
5
31
5.
A circular template has a radius of 10 cm. The measurement of radius has an approximate error of 0.02 cm. Then the percentage error in calculating area of this template is
0.2%
0.4%
0.04%
0.08%
1.
(a)
6e2t + 5 sin t - 4 cos t sin t
2.
(b)
12xo dx
3.
(d)
4.8 cu.cm
4.
(b)
\(\frac15\)
5.
(b)
0.4%
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Tamilnadu Stateboard 12th Standard Subjects
Maths
Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
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