
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Translate the parametric equations into Cartesian equations:  
(1) $\begin{cases} x=5\cos\varphi \\ y=4\sin\varphi \end{cases}$ (where $\varphi$ is the parameter);  
(2) $\begin{cases} x=1-3t^{2} \\ y=4t^{2} \end{cases}$ (where $t$ is the parameter).

Present the answer in LaTex format: \boxed{Your answer}
user