0 votes 0 votes A function $y=5x^2+10x$ is defined over an open interval $x$ = $(1, 2)$ . At least at one point in this interval, $\dfrac{\mathrm{dy} }{\mathrm{d} x}$ is exactly $20$ $25$ $30$ $35$ Calculus gate2013-ee calculus derivatives + – piyag476 asked Feb 11, 2017 edited Mar 7, 2021 by Lakshman Bhaiya piyag476 1.5k points answer comment Share See all 0 reply Please log in or register to add a comment.