Mathematics - 16 July 2007

Whats the four terms of the recursively defined sequence:
bk = bk-1 + 3×k, for all k ³ 2, b1 = 2.

2007-07-16 01:59:24 · 3 answers · asked by Anonymous

Let f:D-->R be continuous at c belonging to D and suppose that f(c)>0. Prove that there exists an $>0 and a neighborhood U of c such that f(x)>$ for all x belonging to U intersection D.

$- alpha

2007-07-16 01:54:35 · 2 answers · asked by news4van 1

Let f: D-->R and define |f|:D-->R by |f|(x)=|f(x)|. Suppose that f is continuous at c belonging to D. Prove that |f| is continuous at c. If |f| is continuous at c, does it follow that f is continuous at c? Justify your answer.

2007-07-16 01:51:57 · 4 answers · asked by news4van 1

What is the complete factors of 297?

2007-07-16 01:48:10 · 2 answers · asked by rojo_salas 2

The formula

1/R=(1/r1) + (1/r2)

determines the combined resistance R when resistors r1 and r2 are connected in parallel. Use total differentiation to determine the effect of a decreasing r1 to the combined resistance R.(assume that r2 is fixed.)

2007-07-16 01:31:15 · 2 answers · asked by physics maniac 2

2007-07-16 01:07:11 · 12 answers · asked by Randy B 1

Prove that if gcd ( a ,b ) divides c , the eqaution has infinitly many solutions .Can you show this step by step . Thanks !

2007-07-16 01:03:13 · 2 answers · asked by Arithmetica 1

At what time, between 3:00 & 4:00 will the sum of the angles of the two hands add up to 270°? The angle of each hand is measured from the 12:00 position, clockwise, to their current time position. Give the exact time. Hour:minute:second (seconds provided with one digit after the decimal point) Provide your solution please.

2007-07-16 00:33:21 · 7 answers · asked by Alam Ko Iyan 7

can any one asnwer plz

2007-07-16 00:26:53 · 8 answers · asked by suryya j 1