00:01
In this question, we are given a function of f of x, and bear us to find the antiderivative of f of x, which satisfies the condition f big of 1 is equal to 0.
00:13
So, remember, the antiderivative of f of x is a function of big of x which is equal to the indefinite integral of 5 minus 3, indefinite integral of f of x.
00:30
And remember, calculating indefinite integral involves a constant of integration.
00:34
And basically in this question we are asked to find this constant of integration using this extra condition that f big of 1 is equal to 0.
00:44
First, let's integrate the function f of x.
00:47
So this integral can be split into two integrals, integral 5dx minus 3 integral 1 over 1 plus x squared dx.
01:01
Now both are table integrals.
01:05
The first one is just 5x.
01:07
Second one, the integral of dx over 1 plus x squared is arc tangent x.
01:16
And then we have the constant of integration c because it's an indefinite integral.
01:22
So basically that's our antiderivative f big of x...