Define x - 1 - 3x- Then what is 3 1-

The correct option is A 4 x=1 3x To find 3 1 Putting 3 and 1 in place of x 3 1 = 1 3× 3 1 3× 1 = 1 9 1 3 = 8 2 =4 ...

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Standard XII

Mathematics

Ex Radius

Define x = ...

Question

Define $△ x = 1 - 3 x$ . Then what is $\frac{△ 3}{△ 1}$ ?

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Solution

The correct option is A $4$
$△ x = 1 - 3 x$
To find $\frac{△ 3}{△ 1}$
Putting $3$ and $1$ in place of $x$
$\frac{△ 3}{△ 1} = \frac{1 - 3 \times 3}{1 - 3 \times 1} = \frac{1 - 9}{1 - 3} = \frac{- 8}{- 2} = 4$

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