The binary operation - - is defined as a - b-2 a-b- Find 2 - 3 - 4 - -CBSE 2012-

As, nbsp;a nbsp;* nbsp;b nbsp;= 2a nbsp;+ b So, nbsp;(2 * 3) * 4 = [2(2) + 3] * 4 = [4 + 3] * 4 = 7 * 4 = 2(7) + 4 = 14 + 4 = 18 ...

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Standard XII

Mathematics

Binary Operation

The binary op...

Question

The binary operation * : R $\times$ R $\to$ R is defined as a * b = 2a + b. Find (2 * 3) * 4. [CBSE 2012]

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Solution

As, a * b = 2a + b

So, (2 * 3) * 4 = [2(2) + 3] * 4
= [4 + 3] * 4
= 7 * 4
= 2(7) + 4
= 14 + 4
= 18

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The binary operation * : R × R → R is defined as a * b = 2a + b. Find (2 * 3) * 4. [CBSE 2012]

As, a * b = 2a + b So, (2 * 3) * 4 = [2(2) + 3] * 4 = [4 + 3] * 4 = 7 * 4 = 2(7) + 4 = 14 + 4 = 18

The binary operation * : R $\times$ R $\to$ R is defined as a * b = 2a + b. Find (2 * 3) * 4. [CBSE 2012]

As, a * b = 2a + b

So, (2 * 3) * 4 = [2(2) + 3] * 4
= [4 + 3] * 4
= 7 * 4
= 2(7) + 4
= 14 + 4
= 18