Let a be a real number such that the function f(x)=ax2+6x−15,x∈R is increasing in (−∞,43) and decreasing in (43,∞). Then the function g(x)=ax2−6x+15,x∈R has a
Held on 20 Jul 2021 · Verified 6 Jul 2026.
local maximum at x=−43
local minimum at x=−43
local maximum at x=43
local minimum at x=43
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Let $y = y(x)$ be the solution of the differential equation $x\sin\left(\dfrac{y}{x}\right)dy = \left(y\sin\left(\dfrac{y}{x}\right) - x\right)dx$, $y(1) = \dfrac{\pi}{2}$ and let $\alpha = \cos\left(\dfrac{y(e^{12})}{e^{12}}\right)$. Then the number of integral values of $p$, for which the equation $x^2 + y^2 - 2px + 2py + \alpha + 2 = 0$ represents a circle of radius $r \leq 6$, is __________.
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