00:01
In this exercise, we want to find the derivative of the function fx equals 5 over x cubed, minus 2 over x squared, minus 1 over x plus 200.
00:22
And we can rewrite the expression as 5 times x to a power of minus 3, minus 2, x to a power minus 2, x to a power minus 2, minus x to a power minus 1 plus 200.
00:40
And the rule 4 tells us that the derivative of sum equals the sum of derivative.
00:46
And it has just a derivative of the first term, plus the derivative of a second term, plus a derivative of a third term, plus the derivative of the fourth term.
01:12
And now we can use rule 3.
01:14
So the direct here just a constant times the derivative of a function...