Whether you like math or hate math. Whether you major(ed) in nursing, journalism, business, or engineering. From what you remember throughout your math classes from K-12 or college, what were the math topics you remember being the hardest, most challenging, most difficult to understand, and did you hate it so much? Keep in mind, you may need a refresh. Just mention the math class or the math topic. There's literally over 1 million different math topics and it can be in any field. For example, personally for me, if I had to rank my top 5 hardest math topics growing up, this would be it, and this is coming from a computer engineering major who was usually the strongest in his math classes in elementary, middle and high school. Once I hit college I was competing against the best math geniuses.

1. Diode Transistor Problems from Microelectronic Circuits: Having to solve different equations with open or closed circuits, and testing whether the diode works or not, and if it doesn't, then you have to turn diodes on or off and set up different equations, and it's easy to get it more wrong than correct.
http://tuttle.merc.iastate.edu/ee230/practice/diodes/diodeckt4.png

2. Integration from ANYTHING: Whether you're taking Calc II, Physics II, Differential Equations or any engineering class with lots of formulas in there, various problems will cover different integration formulas with many variety of conditions and it's ridiculous.
https://www.onlinemathlearning.com/image-files/xintegration-by-parts.png.pagespeed.ic.aWYnDlXHRR.png

3. Probability from Statistics: If you're taking stats or discrete math, then you'll have to look out for so many different probabilities, and anyone can understand the probability of the side you get flipping a coin with 2 sides or rolling a dice with 6 squares, but you wait until they give you many different combinations of probability questions and you start using that stuff with populations, means, and graphs. It's not as easy as it sounds trust me. This is not basic elementary level probability. This is advanced college level probability I'm talking about here.
https://getcalc.com/formula/statistics/probability.png

4. Trigonometric Identities from Precalculus: Trig is not that bad honestly when it's the basic sine, cosine, and tangent triangles, and even the unit circle and PI radians aren't that bad, but once you get to identities things get a lot more complicated.
http://4.bp.blogspot.com/-OozzXCo4U94/VmgwnsJT5fI/AAAAAAAABEo/8gmyYkNre5M/s1600/1.png

5. Geometry: I hated Geometry so much. Congruent sides. Degree angles between 0 and 180 that were complementary or supplementary. Perimeter. Area. Volume. Surface Area. The Equilateral triangle. The arc and sector of the circle. Interior angles of polygons. PROOFS! and so forth. I could NOT stand it as a freshman in high school.
https://cdn.kastatic.org/googleusercontent/Kysq7LyBNQ0epL9eOQ1U_29NxfTSP2J8LHo8KxUEJZ2vhf0qpuDty0H8P4jMP_2McjRd6aROu9LnjZE5IervV42J

Honorable Mention. Factoring from Algebra: Finding the greatest common factor to factor many different binomials, trinomials, polynomials, etc. Now I'm a master of this now, but when it was brand new to you back in middle school or high school, man it was tough getting used to all the methods to do this, and it follows you everywhere you go in later math classes.
https://2.bp.blogspot.com/--3sv7XPOt8A/WF7n8sT0b2I/AAAAAAAADHc/QX0wPG2wMJAXtzNKcM7_MspEMJUKt6JQgCLcB/s1600/Slide4.jpg

^ I can understand most of those myself, since I took several higher levels of math (in highschool AND college). The first one you mentioned (diode transistors/microelectric circuits), is one that I have never learned, so I agree with you on that.


There is one mathematics course I took in college that I regret taking, since it was super-difficult (and the professor for it was no better): numerical analysis. I only took it because it was an option for the major that I eventually dumped. I don't know if anyone in the class actually aced any of the material in it. So this gets my nomination for most difficult math topic to understand.

Honorable Mention. Factoring from Algebra: Finding the greatest common factor to factor many different binomials, trinomials, polynomials, etc. Now I'm a master of this now, but when it was brand new to you back in middle school or high school, man it was tough getting used to all the methods to do this, and it follows you everywhere you go in later math classes.


This.  I had to do this in college, and ended up going back to my high school teacher to review it again.

I only know basic maths, and when at school was totally 'loved' algebra, even the complicated tasks.

I only know basic maths, and when at school was totally 'loved' algebra, even the complicated tasks.

At first it was a little complicated for me, but after a little bit of tutoring, I began to excel in the class. Just about everyone in the class was good to me, too (especially the kids who sat near me; they were amazed at my mathematical knowledge).