Question

30 Dresser le tableau de variations des fonctions

suivantes définies sur R.
1. f:x- (2x - 1)(2x+1)
2. g:x--3(x+1)(x-1)

Answer 1

Explanation:

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Answer 2

The tableau de variations describes the sign of the function for certain values of x, specifically at critical points and as x approaches positive or negative infinity. A "+" sign indicates that the function is positive at that point, a "-" sign indicates that the function is negative at that point, and a "0" sign indicates that the function is equal to zero at that point.

In the first function, the critical points are -1/2 and 1/2, where the function changes sign. As x approaches negative infinity and positive infinity, the function is positive.

In the second function, the critical points are -1 and 1, where the function changes sign. As x approaches negative infinity and positive infinity, the function is negative.

(Attached the tables)