In the Gauss elimination method for solving a system of linear algebraic equations,triangularzation leads to
| A. | Diagonal matrix |
| B. | Lower triangular matrix |
| C. | Upper triangular matrix |
| D. | Singular matrix |
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Option: C Explanation : Click on Discuss to view users comments. |
If Δf(x) = f(x+h) - f(x), then a constant k, Δk equals
| A. | 1 |
| B. | 0 |
| C. | f(k)- f(0) |
| D. | f(x + k) - f(x) |
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Option: B Explanation : Click on Discuss to view users comments. |
Double (Repeated) root of
4x3- 8x2- 3x + 9 = 0 by Newton-raphson method is
| A. | 1.4 |
| B. | 1.5 |
| C. | 1.6 |
| D. | 1.55 |
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Option: B Explanation : Click on Discuss to view users comments. |
Using Bisection method, negative root of x3 - 4x + 9 = 0 correct to three decimal places is
| A. | -2.506 |
| B. | -2.706 |
| C. | - 2.406 |
| D. | None of these |
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Option: B Explanation : Click on Discuss to view users comments. |
Four arbitrary points (x1, y1), (x2, y2), (x3, y3),(x4, y4) are given in the x, y-plane. Using the method of least squares, if regressing y upon x gives the fitted line y = ax + b; and regressing y upon x gives the fitted line y + ax + b; and regressing x upon y gives the fitted line
x = cy + d, then
| A. | Two fitted lines must coincide |
| B. | Two fitted lines need not coincide |
| C. | It is possible that ac = 0 |
| D. | A must be 1/c |
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Option: D Explanation : Click on Discuss to view users comments. |
