Question

explain this guys plsss.

IT'S URGENT​

Answer 1

Answer:

f(x) = ln(sgn(9-x^2)) + √[x]^3-4[x]

Now,

because in the nature logarithm term the argument is the Signum function it should only take positive Value of +1

So, for this,

9-x^2>0

or,

x € (-3,3)

Now,

the argument function inside the square root function must be positive.

So, from here we get,

[x]^3-4[x] >=0

or,

[x]([x]^2-4)>=0

or,

[x]([x]-2)([x]+2)>=0

The solution to this inequality is,

[x] € [-2,0] U [2,inf)

So,

x € [-2,1) U [2,inf)

So, the domain of the entire function will be the intersection set of x values of both the inequality results.

and, hence the domain of this function will be

[-2,1) U [2,3)

Option (A)

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Hope this helps you !

Answer 2

Answer:

which question give i answer