In the operation x-xy-y- we always ignore -x-y-

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Multiplication & Division of Errors

In the operat...

Question

In the operation $(x + Δ x) (y + Δ y)$ , we always ignore $Δ x Δ y$ .

False

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True

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If $x, y, z \in R^{+}$ then $\frac{x y}{x + y} + \frac{y z}{y + z} + \frac{x z}{x + z}$ is always

⊚

x ⊚ y = \sqrt{x y}

(5 ⊚ 45) ⊚ 60 =

Question : 8

For any two integers $x a n d y$ , which of the following suggests that operation of addition is commutative ?

(a) $x + y = y + x$

(b) $x + y > x$

(d) $x y = y x$

x + y

x y

x - y

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