Recent questions tagged class12

Use the truth table to establish which of the following statements are tautologies and which are contradictions.

asked Sep 13, 2013 by sreemathi.v

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Use the truth table to establish which of the following statements are tautologies and which are contradictions.

asked Sep 13, 2013 by sreemathi.v

1 answer

Use the truth table to establish which of the following statements are tautologies and which are contradictions.

asked Sep 13, 2013 by sreemathi.v

1 answer

Solve the following differential equation;$(D^{2}-13D+12)$y$=e^{-2x}+5e^x$

asked Sep 5, 2013 by sreemathi.v

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The feasible region for an LPP is shown in the figure below ( fig 12.13 in textbook ).Let $F=3x-4y$ be the objective function.Minimum value of $F$ is

asked Aug 21, 2013 by sreemathi.v

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The feasible region for an LPP is shown in the fig.12.13.Let $F=3x-4y$ be the objective function.Maximum value of $F$ is

asked Aug 21, 2013 by sreemathi.v

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The feasible solution for a LPP is shown in fig.12.12.Let $Z=3x-4y$ be the objective function.(Maximum value of $Z$+Minimum value of $Z$) is equal to

asked Aug 21, 2013 by sreemathi.v

1 answer

The feasible solution for a LPP is shown in fig.12.12.Let $Z=3x-4y$ be the objective function.Maximum of $Z$ occurs at

asked Aug 20, 2013 by sreemathi.v

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The feasible solution for a LPP is shown in fig.12.12.Let $Z=3x-4y$ be the objective function.Minimum of $Z$ occurs at

asked Aug 20, 2013 by sreemathi.v

1 answer

In the figure below ,the feasible region (shaded)for a LPP is shown .Determine the maximum and minimum value of $Z=x+2y$

asked Aug 20, 2013 by sreemathi.v

1 answer

The feasible region for a LPP is shown in fig 12.10.Evaluate $Z=4x+y$ at each of the corner points of this region.Find the minimum value of $Z$,if it exists.

asked Aug 20, 2013 by sreemathi.v

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The feasible region for a LPP is shown in fig.12.9.Find the maximum value of $z=11x+7y$

asked Aug 20, 2013 by sreemathi.v

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The feasible region for a LPP is shown in fig.12.9.Find the minimum value of $z=11x+7y$

asked Aug 20, 2013 by sreemathi.v

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Feasible region (shaded) for a LPP is shown. Maximise $z=5x+7y$

asked Aug 20, 2013 by sreemathi.v

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Determine the maximum value of $z=3x+4y$ if the feasible region (shaded) for a LPP is shown in fig:

asked Aug 20, 2013 by sreemathi.v

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Find the maximum value of $2x^3 – 24x + 107$ in the interval $[-3,-1]$

asked Aug 19, 2013 by sreemathi.v

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For what value of $ \lambda $ is the function defined by $f$ defined by $ f(x) = \left\{ \begin{array} {1 1} \lambda(x^2 - 2x) ,& \quad\text{ if $ x $ $\leq 0$}\\ 4x + 1,& \quad \text{if $x$ > 0}\\ \end{array} \right.$ What about continuity at $ x = 1$?

asked Aug 19, 2013 by sreemathi.v

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Examine if Rolle’s theorem is applicable to any of the following functions. Can you say some thing about the converse of Rolle’s theorem from these example? $(iii)\;f (x) = x^2 - 1 \; for\; x \: \in [1,2] $

asked Aug 16, 2013 by sreemathi.v

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Examine if Rolle’s theorem is applicable to any of the following functions. Can you say some thing about the converse of Rolle’s theorem from these example? $ (ii)\;f (x) = [x] \; for\; x \: \in [-2,2]$

asked Aug 16, 2013 by sreemathi.v

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Find the intervals in which the function $f$ given by $f (x) = 2x^2 – 3x$ is $ (b)\; strictly\; decreasing$

asked Aug 16, 2013 by sreemathi.v

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Find the area under the given curves and given lines: $ (ii)\:y = x^4, x = 1, x = 5 \: and\: x - axis$

asked Aug 16, 2013 by sreemathi.v

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The interval on which the function $f(x)=2x^3+9x^2+12x-1$ is decreasing is :

asked Aug 12, 2013 by sreemathi.v

1 answer