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# Derivative of a Sum (or Difference) of Functions Exercises

### Example 1

Find the derivative of the function.

• f(x) = 3x + 7

### Example 2

Find the derivative of the function.

•  f(x) = ex + ln x

### Example 3

Find the derivative of the function.

### Example 4

What's the derivative of the following function?

• f(x) = x4 – 3x2

### Example 5

Find the derivative of the function.

### Example 6

Find the derivative of the function.

•  f(x) = log2 x3log2 x9

### Example 7

Find the derivative of the function.

•  f(x) = logx – 2cos x

### Example 8

Find the derivative of the function.

• f(x) = 3cos x – 2x7 + 4x3

### Example 9

Find the derivative of the function.

### Example 10

Find the derivative of the function.

• f(x) = x(x + 4) – (x – 1)2