ForeignHorse

When I substitute z=x+yi, I can't seem to work out the answer. Anyone knows how to solve this ? Thanks

Is this a binomial distribution question ? I need help for this. Can anyone explain ? Thank you in advance !

For question (b), how do you find the matrix? Normally they will give you the matrix and find the transformation instead of finding the matrix right? Are there any specific formula for this ? Thanks.

Nutrients are always transported through phloem downwards right? But in this case, the answer given is D sugars upwards. Why is it upwards instead of downwards ? Does the water in this case going upwards too? I am a little bit confused. Hope to get some explanation. Thanks )