asked 233k views
3 votes
Use the quotient rule to find the derivative of a function in the form f(x)/g(x)

Find h'(1) for the function h(x) = (g(x) / f(x)), where f(x) = 2x² + x - 3 and g(x) = -3x² - 4x + 2.

asked
User KomalG
by
8.4k points

1 Answer

3 votes

Final answer:

The derivative h'(x) for the function h(x) = g(x) / f(x), with given functions f(x) and g(x), is found using the quotient rule. The derivatives g'(x) and f'(x) are calculated, substituted into the quotient rule formula, and simplified to obtain h'(x). Finally, h'(1) is calculated by substituting x = 1 into h'(x).

Step-by-step explanation:

To find the derivative h'(x) of the function h(x) = g(x) / f(x), where f(x) = 2x² + x - 3 and g(x) = -3x² - 4x + 2, we can use the quotient rule for differentiation. The quotient rule states that the derivative of a function in the form u(x)/v(x) is (v(x)u'(x) - u(x)v'(x)) / v(x)². In this case, u(x) = g(x) and v(x) = f(x).

First, we find the derivatives of g(x) and f(x):

g'(x) = d(-3x² - 4x + 2)/dx = -6x - 4

f'(x) = d(2x² + x - 3)/dx = 4x + 1

Next, applying the quotient rule:

h'(x) = (f(x)g'(x) - g(x)f'(x)) / f(x)² = ((2x² + x - 3)(-6x - 4) - (-3x² - 4x + 2)(4x + 1)) / (2x² + x - 3)²

To find h'(1), we substitute x = 1 into the derivative:

h'(1) = ((2(1)² + 1 - 3)(-6(1) - 4) - (-3(1)² - 4(1) + 2)(4(1) + 1)) / (2(1)² + 1 - 3)²

Therefore, h'(1) is the value obtained after calculating the above expression.

answered
User Damany
by
8.3k points

No related questions found

Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.