Question 19

Mathematics Differentiation Hard

Find the point at which the tangent to the curve&nbsp;y =&nbsp;<span class="math-tex">\(\rm \sqrt{4x-3}-1\)</span>&nbsp;has its slope&nbsp;<span class="math-tex">\(\dfrac{2}{3}\)</span>.

(A) (3, 3)
(B) (3, 2)
(C) (2, 3)
(D) (2, 2)
View Dynamic Solution & Explanation
Correct Solution: Option B

Step-by-step Solution:

Slope \(= \frac{d y}{d x} = \frac{4}{2 \sqrt{4x - 3}} = \frac{2}{3}\) \[ \sqrt{4x - 3} = 3 \Rightarrow 4x - 3 = 9 \Rightarrow x = 3 \] and \( y = 2 \) Required point is \( (3, 2) \).