Kline's Calculus - erratum

[webmjmweb]

Hello all,
Does anyone have a copy of Morris Kline's "Calculus: An Intuitive and Physical Approach (2nd edition) ? There is an error on page 148 in my copy, and if it's not just a blip in my copy I thought I'd send it off to the publisher.
He differentiates:
y = sqrt(x^2 + 6x + 4)
and gets:
1/2u^-(1/2)(2x + 6) = (2x + 6) / sqrt(x^2 + 6x + 4)
That should be:
1/2u^-(1/2)(2x + 6) = (2x + 6) / (2 * sqrt(x^2 + 6x + 4))
If you know of an errata sheet, I'd appreciate the reference.
Thanks,
Mike

 

[Deleted member 4993]

Hello all,
Does anyone have a copy of Morris Kline's "Calculus: An Intuitive and Physical Approach (2nd edition) ? There is an error on page 148 in my copy, and if it's not just a blip in my copy I thought I'd send it off to the publisher.
He differentiates:
y = sqrt(x^2 + 6x + 4)
and gets:
1/2u^-(1/2)(2x + 6) = (2x + 6) / sqrt(x^2 + 6x + 4)
That should be:
1/2u^-(1/2)(2x + 6) = (2x + 6) / (2 * sqrt(x^2 + 6x + 4)) That could be further simplified to: \(\displaystyle \dfrac{x + 3}{\sqrt{x^2+6x+4}}\)
If you know of an errata sheet, I'd appreciate the reference.
Thanks,
Mike

.

 

[webmjmweb]

Kline's Calculus -erratum

Hi Subhotosh,
Thanks for responding. Yes it can be simplified, just so. My question was about the error though, and getting it corrected. If it's not just a quirk in my copy, I'll send to the publisher. It's a (rightly) well-regarded text and I'd like to see it set right. Kline would too
Thanks,
Mike