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Description
GEOMETRIA DE CURVAS Y SUPERFICIES CON APEste manual est dedicado a realizar un estudio bsico de curvas y superficies, desde el punto de vista de la geometra diferencial. Su contenido dedica una especial atencin a las curvas cnicas y a las superficies cudricas por su importancia en las obras arquitectnicas, en las que ms tarde se manifiestan. Este libro contiene una estructura sustentada en figuras de inters geomtrico desde el punto de vista matemtico. Su teora es autocontenida y se ilustra
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.7 ★★★★★
Based on 83 reviews
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Product Reviews
★★★★★ 5
Black & Decker battery grass trimmer tool
Style: 20V String Trimmer Kit
Top quality battery operated Black & Decker Cordless String Trimmer ; . Assembly was very easy, only a couple pieces, not too heavy , versatile. ; What is great about the Black & Decker battery operated tools is that you can use the 20v battery with other Black & Decker tools that are out in the market. also, an extra battery can be purchased.. Tool as good instructions if you need it .
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Light weight and easy to handle
Style: 20V String Trimmer Kit
This is my second one. Light weight and easy for me (old woman) to handle. Unit rotates so you can edge. The old one lasted right at 6 years. My old batteries work on new unit also. I get the one with the wheel which makes it much easier to edge. This one auto feeds and my old one didn’t. I don’t know how I feel about the auto feed. Another brand I had before with auto feed stopped working. That was a pain to manually feed. Have only used the new one twice
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Works well
Style: 20V String Trimmer Kit
Love this for small jobs and the batteries last.
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Easy to use
Style: 20V String Trimmer Kit
Easy to use, effective
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Reviewed in the United States on May 12, 2026
★★★★★ 3
Very disappointed
Style: 20V String Trimmer Kit
This is my second black and decker weed eater. Very disappointed. The first is at least 10 years old and was more powerful. The only reason I replaced it was because it stopped feeding. The BD people told me they didn’t make parts for it anymore. I’ll not buy another. Not as powerful and the battery lasts maybe 15 minutes.
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Reviewed in the United States on May 10, 2026
