Mathematics

Use integration?? please help

A curve passes through (2, -5) and satisfies = 6x^2 – 1. Find y in terms of x. thanks in advance! :)-Im assuming its dy/dx = 6x² - 1? What you can do is assume this to be an initial value problem

How can we show| sin(z| > 1

Show that, if z is a non real complex such that sin(z) is real, then|sin(z)| > 1. Thank you.-Use the identity sin(x+iy)=sin(x)cosh(y)+icos(x)sinh(y) . Since sin(z) = sin(x + iy) is real, cos(x)sinh(

Is there a formula for summation of a series, in which each term is summation of the same GP upto the position

sum to n series=[a/(r-1)^2][r(r^n-1) -n(r-1)].

An object moves in the xy -plane. (parametric equations)

At time t, the position of the object is given by x = 9t − 5, y = 4t − 13. Determine when the object hits the x-axis. Then determine when the object his the y-axis.-A plot hits the x axis when y = 0

Please help on math problem, 10 points

A lily pad doubles in size each day. If it takes 28 days for the lily pad to cover the entire pond, how many days will it take to cover 1/4 of the pond? show your work-First Method: Alright, so it ta

Find the max of these differential equations

find the max of these equations without solving them. I know that sounds weird, but without going through the calculations, find the max. y = 1500 - 3y^2 y = 1200 - 2y^2 thanks for the help!-y = 0

How can I prove the summation of (n+1)/(n^(5/2)) converges using the Limit/Direct Comparison Test

See the question.-By the limit comparison test if lim n-> infinity of a(n) / b(n) converges to nonzero real number then the series a(n) converges iff series b(n) converges Here a(n) is (n+1)/n^(5/2) L

How to draw the graph of y=3^2+4x

y=3^2+4x for -2 (equal to or greater than) x (equal to or less then) 2-http://i51.tinypic.com/358w2kh.png

Without a calculator, evaluate cos(9pi/4)?? im usually so good at math but the summer erased my memory..help?!

without a calculator, evaluate cos(9pi/4) PLEASE give an explanation, i know the answer already from using my calculator but im so confused of how to get it without one, which is sadly what my homewor

Solve for x. (x + 3)^4/3 = 81

Solve for x. (x + 3)^4/3 = 81 I got the answer 24, but supposedly you can get a second answer which is -30 . . But I dont know how to get that answer, please help me!-[(x+3)^1/3]^4 = 81 (x+3)^1

Collect like terms? Math help?

11a + 6c + 4a And also for 3r + 2r^2 + 4r-like terms are either numbers or terms having the same variable........ 11a + 6c + 4a = 15a+ 6c 3r + 2r^2 + 4r = 2r^2 + 7r-if the letter (the variable) be

What is sin(1) in terms of pi

im trying to figure out the problem the limit of sin x over x + tan x as x approaches 0-Get your answer in degrees. Divide it by 180 then multiply with pi.- Alternatively, and more expectedly if you

Continuity question!! hellpppp!

GIVEN THESE PIECE-WISE FUNCTIONS f(x) = {1 , if 0≤x0 , if x and g(x) = {0 , if 0≤x1 ,ifx i have to find if these functions are continuous at x=0 in each of these parts: f(x) g(x) f(-x) lg(x)l f(

Find the precision for each measurement

Find the precision for each measurement. Explain its meaning. Thanks!! 1.) 80 in. 2.) 22 mm 3.) 16 1/2 in.-1.) 1 sig fig. The number could be as low as 75.0 inches or as high as 84.5 inches. 2.) 2 si

Absolute Value Simplifications

Simplify, leaving as little as possible inside absolute value signs: I 9x I I 2x^2 I I -2x^2 I I -6y I Ix^2 over -y I fraction^ Solve: I q I = 0 I x I = 3 10 - I 2x - 1 I = 4 I 3x + 4 = I x