Find the anti derivative $F$ of $f$ defined by $f(x) = 4x^3 - 6$, where $F(0) = 3$
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → $x^4 - 6x + 3$
One anti derivative of $f(x)$ is $x^4 - 6x$ since
$\frac{d}{dx} (x^4 - 6x) = 4x^3 - 6$
Therefore, the anti derivative $F$ is given by
$F(x) = x^4 - 6x + C, \text{ where } C \text{ is constant.}$
Given that $F(0) = 3$, which gives,
$3 = 0 - 6 \times 0 + C \quad \text{or} \quad C = 3$
Hence, the required anti derivative is the unique function $F$ defined by
$F(x) = x^4 - 6x + 3.$