Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

f(x)=(4x)/(x^(3)+2x^(2)-3x)

f(x)=4xx3+2x23x f(x)=\frac{4 x}{x^{3}+2 x^{2}-3 x}

Full solution

Q. f(x)=4xx3+2x23x f(x)=\frac{4 x}{x^{3}+2 x^{2}-3 x}
  1. Apply Quotient Rule: To find the derivative of the function f(x)=4xx3+2x23xf(x)=\frac{4x}{x^{3}+2x^{2}-3x}, we will use the quotient rule. The quotient rule states that if we have a function that is the quotient of two functions, u(x)v(x)\frac{u(x)}{v(x)}, then its derivative is given by v(x)u(x)u(x)v(x)(v(x))2\frac{v(x)u'(x) - u(x)v'(x)}{(v(x))^{2}}.
  2. Identify u(x)u(x) and v(x)v(x): First, let's identify u(x)u(x) and v(x)v(x). Here, u(x)=4xu(x) = 4x and v(x)=x3+2x23xv(x) = x^3 + 2x^2 - 3x. We will need to find the derivatives of both u(x)u(x) and v(x)v(x), which are u(x)u'(x) and v(x)v'(x) respectively.
  3. Find u(x)u'(x): The derivative of u(x)=4xu(x) = 4x with respect to xx is u(x)=4u'(x) = 4, since the derivative of xx with respect to xx is 11.
  4. Find v(x)v'(x): Now, let's find the derivative of v(x)=x3+2x23xv(x) = x^3 + 2x^2 - 3x. We will use the power rule, which states that the derivative of xnx^n with respect to xx is nx(n1)n*x^{(n-1)}.
  5. Apply Power Rule: Applying the power rule to each term of v(x)v(x), we get:\newlinev(x)=ddx(x3)+ddx(2x2)ddx(3x)v'(x) = \frac{d}{dx}(x^3) + \frac{d}{dx}(2x^2) - \frac{d}{dx}(3x)\newline = 3x2+4x33x^2 + 4x - 3.
  6. Calculate v(x)v'(x): Now that we have u(x)u'(x) and v(x)v'(x), we can apply the quotient rule to find the derivative of f(x)f(x):f(x)=v(x)u(x)u(x)v(x)(v(x))2f'(x) = \frac{v(x)u'(x) - u(x)v'(x)}{(v(x))^2}=(x3+2x23x)(4)(4x)(3x2+4x3)(x3+2x23x)2.= \frac{(x^3 + 2x^2 - 3x)(4) - (4x)(3x^2 + 4x - 3)}{(x^3 + 2x^2 - 3x)^2}.
  7. Apply Quotient Rule: Let's simplify the numerator of the derivative:\newlineNumerator = 4x3+8x212x4x^3 + 8x^2 - 12x - 12x3+16x212x12x^3 + 16x^2 - 12x\newline = 4x3+8x212x12x316x2+12x4x^3 + 8x^2 - 12x - 12x^3 - 16x^2 + 12x\newline = 8x38x2-8x^3 - 8x^2.
  8. Simplify Numerator: Now we have the simplified numerator and the denominator. The derivative of f(x)f(x) is: f(x)=8x38x2(x3+2x23x)2.f'(x) = \frac{-8x^3 - 8x^2}{(x^3 + 2x^2 - 3x)^2}.

More problems from Find derivatives of using multiple formulae