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What did Xiao Ming do when he went to the park? 小明和爸爸昨天下午去公园踢球 A: sailing B: football C: Running D: picnic

B: football name/with whome/when/where/did what
ZS
Answered by Zhiqi S. • Mandarin tutor
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Identify the stationary points of f(x)=3x^3+2x^2+4 (by finding the first and second derivative) and determine their nature.

f'(x)=9x 2 ​+4x, and f''(x)=18x+4 (derivatives) f'(x)=0 at x=0 or x=-4/9 when x=0 f''(x)>0 therefore a minimum value, when x=-4/9 f''(x)<0 and thus a maximum value.
SO
Answered by Sieff O. • Maths tutor
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How do you form and use and the pluperfect and conditional perfect tenses?

PLUPERFECT Used to describe an action or event that had taken place before some other event in the past How to form it: Auxiliary verb- etre or avoir in the IMPERFECT tense J’étais ; tu étais ; il/elle/on ét...
EW
Answered by Emily W. • French tutor
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can you explain mitosis?

Mitosis is a part of the cell cycle in which the cell divides into two. There are a number of important steps in the process of mitosis including: anaphase, metaphase, prophase and telophase. Before mitosis ...
HB
Answered by Hannah B. • Biology tutor
3156 Views

Describe the blood flow through the heart

Venous blood enters the heart through the vena cava, it drains into the right atrium. The blood then flows through the tricuspid valve into the right ventricle. When the heart contracts the blood is ejected ...
AU
Answered by Alexandra U. • Biology tutor
7801 Views