Question

BASIC CONCEPTS OF DIFFERENTIAL AND INTEGRAL CALCULUS
8.21
20. The slope of the tangent to the curve y = √4-x^2 at the point, where the ordinate and the
abscissa are equal, is
a) -1
b) 1
c) 0
d) none of these
21. The slope of the tangent to the curve y = x^2 -x at the point, where the line y = 2 cuts the
curve in the Ist quadrant, is
a) 2
b) 3
c) 3
d) none of these
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Answer 1

I think option for 20 is 2 and for 21is 4

Answer 2

Answer:

Question no. 20 - (b)

Question no. 21 - (d)