# IB Math SL – Integration

### 1. Integration, Integrals – IB Mathematics SL

How can we find the following indefinite integral?

Solution

### 2. Integration, Integrals – IB Mathematics SL

How can we find the real number a>1 for which the following definite integral equals to 4?

Solution

So, since

### 3. Kinematics, Integration, Integrals – IB Mathematics SL

How can we find the times at which a particle comes to rest when is moving in a straight line with acceleration and with initial speed ?

Solution

The acceleration can be expressed as

So,

Next, we find the constant by setting the initial conditions of the problem (for t=0 , v=8)

.

Therefore, the velocity function is

The particle comes to rest when