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Prove the following by vector method. Al...

Prove the following by vector method. Altitudes of a triangle are concurrent.

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USHA PUBLICATION-MODEL QUESTION SET-MODEL QUESTION SET
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  2. Show that the rectangle of maximum area that can be inscribed in a giv...

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  3. Prove the following by vector method. Altitudes of a triangle are conc...

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  4. Find the magnitude and equation of the line of shotest distance betwee...

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  5. Solve the following by matrix method x-y+z=4, 2x+y-3z=0, x+y+z=2

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  9. Solve: 2sin^(-1) x +sin^(-1) (1-x)= pi/2

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  10. Evaluate intln(x^2+x+2)dx

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  11. int0^pi((xtanx)/(secx+tanx))dx

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  13. Differentiate cos^(-1)(sinx) w.r.t.x.

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  14. int(cot xdx)/(ln sin x) = ?

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