I bought a digital multimeter from Mr DIY which is in Tesco Ipoh building a few weeks ago . It is probably the cheapest one I have ever bought.

I remembered it wasn't long ago when the analog ones cost around RM50.

I bought a handheld digital one a few years back but that one did not last long. I have got a feeling that this one would last longer even though it has only a few days warranty.

So far I have bought quite a few things from Mr DIY. The other day someone was asking me at Mr DIY what is good there and I pointed at the multimeter. He sort of looked at me blankly and asked

" What is that ?"

Well, what he was looking for was a remote control for his DVD/VCD player. He wasn't very familiar with the English language as we were actually speaking in Cantonese. So I showed him some of the remotes which seem to cost around the range of RM 6 to RM10. He wasn't convinced as he thought it could destroy his set.

Anyway I am quite satisfied with the multimeter I bought - except for one time when it took some time for the 20V range measurement to work. But it seems to work fine now - just tested it with a 1.5V battery.

## Thursday, December 18, 2014

## Thursday, December 11, 2014

### Identifying sequence convergence and divergence

When the degree of the numerator is the same as that of the

denominator , the sequence converges.

When the degree of the numerator is bigger as that of the

denominator , the sequence diverges.

A sequence that alternates with positive and negative values

such as +1 and -1 is not convergent.

= e

denominator , the sequence converges.

When the degree of the numerator is bigger as that of the

denominator , the sequence diverges.

A sequence that alternates with positive and negative values

such as +1 and -1 is not convergent.

= e

**Identifying sequence convergence and divergence**:## Thursday, December 4, 2014

### Radius of convergence

The radius of convergence is 1/2 the length of the interval of convergence.

http://www.sosmath.com/calculus/radcon/radcon02/radcon02.html

When ratio test =0, the series converges for all real numbers so it has an infinite radius of convergence.

http://www.sosmath.com/calculus/radcon/radcon02/radcon02.html

When ratio test =0, the series converges for all real numbers so it has an infinite radius of convergence.

**Radius of convergence using Ratio Test**:## Wednesday, December 3, 2014

### OneRepublic - "I Lived"

This was the number one song in one of the radio channels in Malaysia last week.

## Tuesday, November 25, 2014

## Tuesday, November 18, 2014

### Geometric series convergence and divergence examples

Convergence occurs when 0< |r| <1

**Geometric series convergence and divergence examples**:## Wednesday, November 12, 2014

### One-sided limits from graphs

Subscribe to:
Posts (Atom)