见PDF Task 1, Task 2, Task 3
见PDF Task 1, Task 2, Task 3
Task 2 Fill in the blanks.
Task 2 Fill in the blanks.
Task 2 People Thinking
Task 2 People Thinking
设\(z =xlny\)，\(x =u^2+v^2\)，\(y =u^2-v^2\)，则\( { { \partial z} \over {\partial v}} = \)（ ）。 A: \(2v\left[ {\ln ({u^2} +{v^2}) - \left( { { { { u^2} + {v^2}} \over { { u^2} - {v^2}}}} \right)} \right]\) B: \(2v\left[ {\ln ({u^2} - {v^2})+ \left( { { { { u^2} + {v^2}} \over { { u^2} - {v^2}}}} \right)} \right]\) C: \(2u\left[ {\ln ({u^2} - {v^2}) - \left( { { { { u^2} + {v^2}} \over { { u^2} - {v^2}}}} \right)} \right]\) D: \(2v\left[ {\ln ({u^2} - {v^2}) - \left( { { { { u^2} + {v^2}} \over { { u^2} - {v^2}}}} \right)} \right]\)
设\(z =xlny\)，\(x =u^2+v^2\)，\(y =u^2-v^2\)，则\( { { \partial z} \over {\partial v}} = \)（ ）。 A: \(2v\left[ {\ln ({u^2} +{v^2}) - \left( { { { { u^2} + {v^2}} \over { { u^2} - {v^2}}}} \right)} \right]\) B: \(2v\left[ {\ln ({u^2} - {v^2})+ \left( { { { { u^2} + {v^2}} \over { { u^2} - {v^2}}}} \right)} \right]\) C: \(2u\left[ {\ln ({u^2} - {v^2}) - \left( { { { { u^2} + {v^2}} \over { { u^2} - {v^2}}}} \right)} \right]\) D: \(2v\left[ {\ln ({u^2} - {v^2}) - \left( { { { { u^2} + {v^2}} \over { { u^2} - {v^2}}}} \right)} \right]\)
In marking or assessment, Task 2 carries more weight than Task 1.
In marking or assessment, Task 2 carries more weight than Task 1.
Listening task 2 Questions 12-15
Listening task 2 Questions 12-15
Task 2 Choose the best answers. 2) Take an umbrella with you ________ the rain.
Task 2 Choose the best answers. 2) Take an umbrella with you ________ the rain.
Here is a task 2 question, read carefull...63e8274a32aea756.png
Here is a task 2 question, read carefull...63e8274a32aea756.png
Task 2 1-Listening-2.mp3: Mr. White is m...rown is a ________.
Task 2 1-Listening-2.mp3: Mr. White is m...rown is a ________.
You are not allowed to write Task 2 first.
You are not allowed to write Task 2 first.