Look at the given expression,
(2x-1.1 + 0.5x0.5 + 2ex) | dx |
The first rule to remember is this: constant coefficients such as the 2 in front of the x-1.1 always "go along for the ride." In other words, we can just copy them over when taking the antiderivative (see below).
First term:
2x-1.1 | dx. |
Since the 2 "goes along for the ride," we can write
2x-1.1 | dx | = |
|
= |
|
Using the power rule. (-1.1+1 = -0.1) | ||||||
= |
|
That takes care of the first term. The second term is
0.5x0.5 dx | = |
|
The 0.5 "goes along for the ride" | ||||
= |
| Power rule for integrals | |||||
= |
|
The last term is
2ex dx | = |
|
The 2 "goes along for the ride" | |||
= |
| ex is its own antiderivative |
Putting them all together gives:
(2x-1.1 + 0.5x0.5 + 2ex) | dx | = | -20x-0.1 | + | 3 |
+ 2ex + C |
You can enter this as -20x^(-.1) + x^1.5/3 + 2e^x + C
Just close this window to return to the tutorial.
Lost the tutorial to which this window is attached? Press here.