यदि वक्र y2 = 16x और 9x2 + αy2 = 25 समकोण पर प्रतिच्छेद करते हैं, तो α =

If the second derivative at a critical point is negative, what can be concluded about the point?

If the second derivative at a critical point is negative, what can be concluded about the point?

Water is running into a hemispherical bowl of radius 180 cm at the rate of 108 dm3/min. How fast is the water level rising when the depth of the water level in the bowl is 120 cm?