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2 years ago

Find the value for x to the third decimal place: In x=5

Mathematics

1 answer:

mixas84 [53]2 years ago

8 0

$\ln x=5\implies x=e^5\approx0.6738\cdot10^{-2}$ .

Hope this helps.

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2 years ago

Find the equation of the locus of a point that moves so that its distance from the line 12x-5y-1=0 is always 1 unit.

leonid [27]

Answer-

The equations of the locus of a point that moves so that its distance from the line 12x-5y-1=0 is always 1 unit are

$12x-5y+14=0 \\ 12x-5y-14=0$

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Let a point which is 1 unit away from the line 12x-5y-1=0 is (h, k)

The applying the distance formula,

$\Rightarrow \left | \frac{12h-5k-1}{\sqrt{12^2+5^2}} \right |=1$

$\Rightarrow \left | \frac{12h-5k-1}{\sqrt{169}} \right |=1$

$\Rightarrow \left | \frac{12h-5k-1}{13} \right |=1$

$\Rightarrow 12h-5k-1=\pm 13$

$\Rightarrow 12h-5k=\pm 14$

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$\Rightarrow 12h-5k-14=0,\ 12h-5k+14=0$

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Two equations are formed because one will be upper from the the given line and other will be below it.

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