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Determine h(1)h'(1) if h(x)=f(g(2x2))h(x)=f(\sqrt{g(2-x^2)}): if g(1)=4g(1)=4, f(2)=2f'(2)=2, g(1)=14g(1)=\frac{1}{4}, g(1)=12g'(1)=\frac{1}{2}

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Q. Determine h(1)h'(1) if h(x)=f(g(2x2))h(x)=f(\sqrt{g(2-x^2)}): if g(1)=4g(1)=4, f(2)=2f'(2)=2, g(1)=14g(1)=\frac{1}{4}, g(1)=12g'(1)=\frac{1}{2}
  1. Find Derivative at x=1x=1: We need to find the derivative of h(x)h(x) at x=1x = 1. To do this, we will use the chain rule, which states that the derivative of a composite function is the derivative of the outer function evaluated at the inner function, multiplied by the derivative of the inner function. The function h(x)h(x) is a composition of ff and g(2x2)\sqrt{g(2 - x^2)}, so we will need to differentiate both of these functions and then evaluate at x=1x = 1.
  2. Use Chain Rule: First, let's find the derivative of the inner function g(2x2)\sqrt{g(2 - x^2)}. We will use the chain rule again, this time for g(2x2)g(2 - x^2) and the square root function. The derivative of u\sqrt{u} with respect to uu is (1/2)u1/2(1/2)u^{-1/2}, and the derivative of g(2x2)g(2 - x^2) with respect to xx is 2xg(2x2)-2xg'(2 - x^2) by the chain rule.
  3. Derivative of Inner Function: Now we can write the derivative of the inner function as: 12(g(2x2))12(2xg(2x2)).\frac{1}{2}(g(2 - x^2))^{-\frac{1}{2}} * (-2xg'(2 - x^2)).
  4. Derivative of Outer Function: Next, we need to find the derivative of the outer function f(u)f(u) with respect to uu, which is simply f(u)f'(u). We will evaluate this derivative at u=g(2x2)u = \sqrt{g(2 - x^2)}.
  5. Evaluate at x=1x=1: Now we can write the derivative of h(x)h(x) as: h(x)=f(g(2x2))(12)(g(2x2))12(2xg(2x2)).h'(x) = f'(\sqrt{g(2 - x^2)}) \cdot (\frac{1}{2})(g(2 - x^2))^{-\frac{1}{2}} \cdot (-2xg'(2 - x^2)).
  6. Calculate g(1)g(1): To find h(1)h'(1), we need to evaluate this expression at x=1x = 1. We will need the values of g(1)g(1), g(1)g'(1), and f(2)f'(2) to do this. We are given that g(1)=4g(1) = 4, g(1)=12g'(1) = \frac{1}{2}, and f(2)=2f'(2) = 2.
  7. Evaluate f(2)f'(2): First, we calculate g(212)=g(1)=4g(2 - 1^2) = g(1) = 4. Then we find the square root of this value, which is 4=2\sqrt{4} = 2.
  8. Evaluate g(1)g'(1): Next, we evaluate f(g(212))=f(2)=2f'(\sqrt{g(2 - 1^2)}) = f'(2) = 2, since we are given that f(2)=2f'(2) = 2.
  9. Substitute Values: We also need to evaluate g(212)=g(1)=12g'(2 - 1^2) = g'(1) = \frac{1}{2}, as given.
  10. Simplify Expression: Now we can substitute all the values into the derivative of h(x)h(x) to find h(1)h'(1):\newlineh(1)=2×(12)(4)12×(2×1×12)h'(1) = 2 \times \left(\frac{1}{2}\right)(4)^{-\frac{1}{2}} \times (-2\times1\times\frac{1}{2}).
  11. Simplify Expression: Now we can substitute all the values into the derivative of h(x)h(x) to find h(1)h'(1):h(1)=2×(12)(4)12×(2×1×12).h'(1) = 2 \times \left(\frac{1}{2}\right)(4)^{-\frac{1}{2}} \times (-2\times1\times\frac{1}{2}).Simplifying the expression, we get:h(1)=2×(12)(12)×(2×1×12)=2×(14)×(1)=12.h'(1) = 2 \times \left(\frac{1}{2}\right)\left(\frac{1}{2}\right) \times (-2\times1\times\frac{1}{2}) = 2 \times \left(\frac{1}{4}\right) \times (-1) = -\frac{1}{2}.

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