In the integration , What is the implicit derivative of u? a. du = 2dx b. du- c. du =- 2dx d. du - Ads O A O O C O D In the integration of (csc 5t)(cot 5t) dt, what is the correct "u"? O (csc 5t)(cot 5t) O cot 5t O 5t O csc 5tSuppose we wish to find the integral of x dx/(1+x*4), the first step to solve this is by Using U-substitution O Substitute "tan(a)" to "x" O Substitute "sin(a)" to "x" Using inverse trigonometric formula In the integration What is the value of u? IVI-4MY a. N - Ahn x b. N = lux C. N - Inx d. n = Inx O A O B O C O D