₦airaland Forum

[color=#000000].....MATHEMATICIANS....

What's Up Nairalanders Mathematician Scholars?...Here's a Room whereby You can post Mathematics questions and Let us all solve it...Both[Nursery, primary, secondary, Tertiary] Mathematics Equations....

Here's mine:Solve this Equation- [1/tanx]... [/color]

Simple Equation Op.

1/tanx..but tanx=sinx/cosx...Using quotient rule
U=sinx, V=cosx..
Du/dx=cosx, dv/dx=-sinx..
Dy/dx=Vdu/dx - Udv/dx
-----[all ova]V square
V square.
Dy/dx=cosx(cosx) - sinx(-sinx)...[all ova]Cosx square.
Cosx square + sinx square...[all ova] cosx square...
Dy/dx=-1/sinx square..
Dat's d answer..

Y=2x(x-1)..Using product rule.

Using my rule. Nigeria - jonathan = progress and development = FEBUHARI.


Very simple equation.

Wow!..But, let me help u solve d rest..
From trig 1/sinx=cosecx.
Dy/dy=1/sinx square]1/sinx x 1/sinx=-(cosecx x cosecx).
Dy/dx=-cosecx square...
That's d final answer bro.

DaZion:
1/tanx..but tanx=sinx/cosx...Using quotient rule
U=sinx, V=cosx..
Du/dx=cosx, dv/dx=-sinx..
Dy/dx=Vdu/dx - Udv/dx
-----[all ova]V square
V square.
Dy/dx=cosx(cosx) - sinx(-sinx)...[all ova]Cosx square.
Cosx square + sinx square...[all ova] cosx square...
Dy/dx=-1/sinx square..
Dat's d answer..

DaZion:
Y=2x(x-1)..Using product rule.

dy/dx=Vdu/dx + Udv/dx
u=2x, v=x-1
du/dx=2 dv/dx=x
dy/dx=(x-1)2 +(2x)x
dy/dx=2x-2 +2xsquare
dy/dx=2xsquare + 2x -2.

2x- 4<-x+5..Find X.

DanceVille:
2x- 4<-x+5..Find X.

Collect Like terms...
2x+x<5+4..
3x<9..
Divide thru by 3
x<3..

DanceVille:
dy/dx=Vdu/dx + Udv/dx
u=2x, v=x-1
du/dx=2 dv/dx=x
dy/dx=(x-1)2 +(2x)x
dy/dx=2x-2 +2xsquare
dy/dx=2xsquare + 2x -2.

Nyc try Ville.

A man and his wife went to buy an article costing #400.The woman had 10% of the cost and the man 40% of the remainder.How much did they have altogether?..

Wife profit on cost price:
10/100 x 400=40.
Remainder=400-40=360.
Man profit on remainder
40/100 x 360=144.
Altogether=144+40=184.

If d 6th term of an A.P is 11 and d first term is 1.Find d common difference.

A+5d=11..
A=1.
1+5d=11
5d=11-1
5d=10
d=2

Y=4(3x-2)..Solve

Making sense!

4x3(3x-2)
12(3x-2).

DaZion:
Y=4(3x-2)..Solve

2x3=9
3x4=18
4x5=?
Solve.