18 วิว Premium07/12/2023
IELTS Speaking test, part 2 topic - Something you wanted.
5 วิว
IELTS speaking part 2 topic card: Someone's room.
0 วิว
IELTS speaking part 2 topic card: Someone who makes things by hand.
1 วิว
A box contains 8 blue & 6 red socks. What is the number of ways that 2 socks can be drawn ...
9 วิว
If u=a+ib is a complex #, then complex conjugate of u*=a-ib. ...
2 วิว
Let B be the mx1 col. matrix [1/m ... 1/m]'. If A =[a1 ... am] is any row matrix. What is AB?
review: prob stat Population variance vs sample variance
4 วิว
JEE Main integral x^2/(a+bx)^2 dx
AP Calculus 3rd way: exp integral 1/(1+e^x) dx [withOUT u-sub]
U Penn: Evaluate trig integral ∫(sin^2(x) -cos^2(x))/(sin(x)-cos(x))^2 dx
2nd way: ∫cos(x)/√(sin^2(x)+4sin(x)+3) dx
UT Austin: sq root integral ∫1/((√x) (1+ √x))dx
8 วิว
logic: contradiction p∧¬p
3 ways: derivative e^y=x
2nd way: trig 𝖎𝖓𝖙𝖊𝖌𝖗𝖆𝖑 ∫sin(x)cos(x)cos(4x)cos(8x)cos(16x)cos(32x)cos(64x) dx
2 ways: diff eq Solve dy/dx-x^2=0
Prove the slope-intercept formula by using the slope formula for the line that has slope m, ...
6 วิว
STPM Math T Sem.2: 12.1 Numerical solution of Equations
3 วิว
2 ways: diff eq Solve dy/dx=y-1
Diff Eq: Solve sec(x) dy/dx=y+sin(x) via Integrating factor [IF]