2 ways of "counting" (a+b)^2 = a^2+2ab+b^2

Median [special weighted mean]

4 Views

Penn. State U: Suppose the p.m.f of discrete random variable X is ...

10 Views

example: Mean, Median & Mode

10 Views

trig Write each expression as an equivalent algebraic expression involving only x.

28 Views

🪔 Happy Deepavali 🪔 [Nov-12-2023]

11 Views

MP 2000 Hindustan: Evaluate ∫(tan(x)+cot(x))^2 dx

56 Views

MP 98 Hindustan: Evaluate (i) ∫e^loge(x) dx (ii) ∫e^(-loge(x)) dx

40 Views

AI 2008 Hindustan 2nd/2 ways: Evaluate trig integral ∫2cos(x)/(3 sin^3(x)) dx

29 Views

count quick review: Permutation vs Combination

12 Views

Alternate way: Find 1+2+3+... +(n-1)+n via "polynomial degree 2"

27 Views

diff eq: Solve dy/dx = (2y4x^4)/(xy^3) ❌separable to ✅separable

14 Views

2nd/2ways: count perm Show P(n,n)=P(n,n-1)

2 Views

2 ways: trig Show (1-cos(x))/sin(x)=sin(x)/(1+cos(x))

8 Views

trig Show these identities ...

4 Views

2nd way: derivative y=e^x sin(x) cos^3(x)

2 Views

A cubical die, numbered 1 to 6 is weighted so that a six is twice as likely to occur as any other #.

4 Views

NUS MA1102R: For f(x,y) = e^(xy) + x/y, compute fx & fy

1 View

Lamar U: Differentiate ... a) (5x^3-7x+1)^5 [f(x)]^5, [y(x)]^5

0 View

Bijection of elements in tn & a pair of elements of (n+1)

8 Views

trig integral ∫arc sin(x)/√(1-x^2) dx vs ∫1/(arc sin(x) √(1-x^2)) dx

1 View