A. 300
B. 600
C. tan-13
D. None
The equation of the tangent to the curve x2+2y=8 and which is perpendicular to x-2y+1=0 is
The condition for f(x)= x3+px2+qx+r(x R) to have no extreme value, is
When a circular oil drop expands on water, its area increases at the uniform rate of 40sq. cm per minute. The rate of increase in the radius when the radius 5 cm is
The two curves x2+y2=25, 2x2-9y+18=0
The minimum value of x3-9x2+24x-12 is
The maximum value of x2-x+1/ x2+x+1 is
If y=x3-ax2+12x+5 is increasing for all real values of x, then a lies between
Two tangents are drawn from the point (-2, -1) to the parabola y2 = 4x. If α is the angle between those tangents then tan α =
The slope of the tangent to the curve x2+y2 =4 at (√2, √2) is
The equation of the normal to the curve y2=x3/2a-x at (a, a) is