Maths paper 2 Exam Questions All
Solved.
when is a curve convex - Answer gradient is decreasing (second derivative < 0 )
when is a curve concave - Answer gradient is increasing ( second derivative > 0 )
cosine rule - Answer a² = b² + c² - 2bcCosA
area of triangle - Answer A=1/2absinC
trig identity relating tanx and secx - Answer 1 + tan^2x = sec^2x
trig identity relating cosecx and cotx - Answer 1 + cot^2x = cosec^2x
arc length - Answer theta r
arc area - Answer 1/2 theta r^2
f(|x|) - Answer reflect on y axis
|f(x)| - Answer all y values positive
if vectors a and b are parallel, then - Answer a = kb
sin(-x) = - Answer -sinx
cos(-x) = - Answer cosx
Solved.
when is a curve convex - Answer gradient is decreasing (second derivative < 0 )
when is a curve concave - Answer gradient is increasing ( second derivative > 0 )
cosine rule - Answer a² = b² + c² - 2bcCosA
area of triangle - Answer A=1/2absinC
trig identity relating tanx and secx - Answer 1 + tan^2x = sec^2x
trig identity relating cosecx and cotx - Answer 1 + cot^2x = cosec^2x
arc length - Answer theta r
arc area - Answer 1/2 theta r^2
f(|x|) - Answer reflect on y axis
|f(x)| - Answer all y values positive
if vectors a and b are parallel, then - Answer a = kb
sin(-x) = - Answer -sinx
cos(-x) = - Answer cosx
