Recent content by msimard8

Homework Statement find all complex roots of z^8=81i Homework Equations The Attempt at a Solution let the angle=x z^8=r^8(cis8x) we know 81i=81 (cis pi/2) threfore z^8=81(cos pi/2 + i sin (pi/2) ) 8x= pi/2 + 2kpi x = pi/16 + kpi/4 kEz therefore...

Homework Statement Determine if the congruence has solutions. If it does, determine the complete solution x^11 + 3x^10 + 5x ≡ 2 (mod 11) Homework Equations The Attempt at a Solution i know that 11 | x^11 + 3x^10 + 5x -2 and where ax≡c (mod m) has a solutioon iff...

Homework Statement conssider the system of equations a + b = 2m^2 b+c=6m a+c =2 Determine all real values of m for whcih a<=b<=c Homework Equations The Attempt at a Solution tried subtracting the equations got a-c = -4m a= -6m +2 i have no idea what I am trying...

This is a question pertaining to a lab we did. Ill try to describe it the best i can. What we pratically did was attach a rubber stopper to an end of a string, put the string to a hollow tube (like a torn apart pen), and tied a mass on the bottom. We had to hold on the tube and start swinging...

yep i think i can do it now..thanks bud

Homework Statement I need to express V in terms of Z and A. i know V= (3/5)Y + (2/5)Z given y=2A-3X X=(1/6)Z + (5/6)Y Homework Equations The Attempt at a Solution ok. my first attempt was to isolate y in the second equation, and let the two equations equal...

thanks question solved

yes i have been taught that but don't you need an x or y value of the tangent to use that formula.

umm we havnt been taught derivative's yet. This is an introductory to it.

Find the coordinates of the point on the curve f(x)=3x^2-4x, where the tangent is parallel to the line y=8x. Ok i know the slope of the tangent is 8. and i know the formula is m=[f(a+h)-f(a)]/h i need a hint please

Limit question Find the coordinates of the point on the curve f(x)=3x^2-4x, where the tangent is parallel to the line y=8x. Ok i know the slope of the tangent is 8. and i know the formula is m=[f(a+h)-f(a)]/h i need a hint please

actually I am not gettin the answer that matches the back the ans in the back says (h+5) / (sqroot(h^2+5h+4) +2) i get like (h^2+5h -4) / h^2

thanks a million i feel dumb

The question states Rationalize each of the following numerators to obtain and equivalent expression. (sqroot(h^2+5h+4) -2 ) / h How do i rationalize the numerator here. I don't remember thanks

got x=2/7 which is obviously not 600. still something must be wrong